go-to-k · go-to-k · Aug 9, 2026 · Aug 9, 2026
diff --git a/docs/_generated/integ-last-run.tsv b/docs/_generated/integ-last-run.tsv
@@ -89,7 +89,7 @@ ec2-instance	2026-07-30T06:37:46Z	PASS	180	verify.sh	#1281 NetworkInterfaces ins
 ec2-instance-fanout	2026-07-30T06:24:02Z	PASS	150	verify.sh	new fixture (#1292): 10-inst cold fan-out converged, 13 propagation retries, 0 throttles, 32s deploy
 ec2-vpc	2026-07-26T17:21:15Z	PASS	35	standard	issue 1241 fix verified: explicit DESTROY FlowLog LogGroup; 20 deleted 0 retained 0 orphans
 ecr	2026-07-26T18:36:31Z	PASS	85	standard	0727b sweep-b4 staleness re-run (rc=0); account clean
-ecr-scanning	2026-08-08T16:24:26Z	PASS	52	verify.sh	P0 post-#1345 ECR force-delete opt-in; 3 phases ok, 2 del/0 err, 0 orphans
+ecr-scanning	2026-08-09T06:01:13Z	PASS	55	verify.sh	#1392 exclusion-filter create + filters-only update + filterType asserts; 2 del/0 err, 0 orphans
 ecs-fargate	2026-07-30T11:54:49Z	PASS	420	verify.sh	#1280 live-test: --full-wait waiter w/ new max(600,resolved) cap ran on create+update; 23 del/0 err, orph clean
 ecs-schedule-targets	2026-08-08T19:04:46Z	PASS	60	verify.sh	re-run with drift assert after review fixes; clean
 ecs-service-update-props	2026-07-23T08:20:10Z	PASS		verify.sh	#1173 re-run after VersionConsistency norm; Phase1f + drift clean; destroy 15 del 0 err 0 orph

diff --git a/src/provisioning/providers/ecr-provider.ts b/src/provisioning/providers/ecr-provider.ts
@@ -19,6 +19,7 @@ import {
   type ImageScanningConfiguration,
   type EncryptionConfiguration,
   type ImageTagMutability,
+  type ImageTagMutabilityExclusionFilter,
   type Tag,
 } from '@aws-sdk/client-ecr';
 import { getLogger } from '../../utils/logger.js';
@@ -114,6 +115,55 @@ export class ECRProvider implements ResourceProvider {
     return out;
   }
 
+  /**
+   * Map CFn `ImageTagMutabilityExclusionFilters`
+   * (`[{ ImageTagMutabilityExclusionFilterType, ImageTagMutabilityExclusionFilterValue }]`)
+   * to the SDK shape (`[{ filterType, filter }]`). The member NAMES diverge —
+   * not just their casing — so forwarding the CFn-shaped array verbatim makes
+   * the SDK drop every member and send `[{}]`, and AWS rejects the call (or,
+   * worse, silently loses the exclusions). Returns `undefined` for an absent /
+   * empty list so the caller can omit the field entirely.
+   */
+  private toSdkTagMutabilityExclusionFilters(
+    cfn: unknown
+  ): ImageTagMutabilityExclusionFilter[] | undefined {
+    if (!Array.isArray(cfn) || cfn.length === 0) return undefined;
+    return cfn.map((entry) => {
+      const e = (entry ?? {}) as Record<string, unknown>;
+      return {
+        filterType: e['ImageTagMutabilityExclusionFilterType'] as
+          | ImageTagMutabilityExclusionFilter['filterType']
+          | undefined,
+        filter: e['ImageTagMutabilityExclusionFilterValue'] as string | undefined,
+      };
+    });
+  }
+
+  /**
+   * Inverse of {@link toSdkTagMutabilityExclusionFilters}: SDK
+   * `[{ filterType, filter }]` back to the CFn property shape, so
+   * `cdkd drift` compares the AWS-current exclusions against the
+   * template-shaped baseline instead of a guaranteed false positive.
+   * Returns `undefined` for an absent / empty list so `readCurrentState`
+   * omits the key (a repository with no exclusions).
+   */
+  private toCfnTagMutabilityExclusionFilters(
+    sdk: Array<{ filterType?: string; filter?: string }> | undefined
+  ): Array<Record<string, unknown>> | undefined {
+    if (!sdk || sdk.length === 0) return undefined;
+    // Undefined-valued keys are omitted rather than emitted: S3 drops them when
+    // `observedProperties` is serialized, so a later drift read that DID carry
+    // them would differ by key count and report phantom drift. Both members are
+    // required in the SDK model, so this is defense against a shape AWS should
+    // never return.
+    return sdk.map((f) => ({
+      ...(f.filterType !== undefined && {
+        ImageTagMutabilityExclusionFilterType: f.filterType,
+      }),
+      ...(f.filter !== undefined && { ImageTagMutabilityExclusionFilterValue: f.filter }),
+    }));
+  }
+
   /**
    * Create an ECR Repository
    */
@@ -138,6 +188,9 @@ export class ECRProvider implements ResourceProvider {
       const encryptionConfig = this.toSdkEncryptionConfig(
         properties['EncryptionConfiguration'] as Record<string, unknown> | undefined
       );
+      const exclusionFilters = this.toSdkTagMutabilityExclusionFilters(
+        properties['ImageTagMutabilityExclusionFilters']
+      );
 
       const response = await this.getClient().send(
         new CreateRepositoryCommand({
@@ -148,6 +201,7 @@ export class ECRProvider implements ResourceProvider {
                 imageTagMutability: properties['ImageTagMutability'] as ImageTagMutability,
               }
             : {}),
+          ...(exclusionFilters ? { imageTagMutabilityExclusionFilters: exclusionFilters } : {}),
           ...(encryptionConfig ? { encryptionConfiguration: encryptionConfig } : {}),
           ...(tags ? { tags } : {}),
         })
@@ -216,7 +270,8 @@ export class ECRProvider implements ResourceProvider {
    * Update an ECR Repository
    *
    * Mutable properties: ImageScanningConfiguration, ImageTagMutability,
-   * LifecyclePolicy, RepositoryPolicyText, Tags.
+   * ImageTagMutabilityExclusionFilters, LifecyclePolicy, RepositoryPolicyText,
+   * Tags.
    * Immutable: RepositoryName, EncryptionConfiguration (require replacement).
    */
   async update(
@@ -251,16 +306,41 @@ export class ECRProvider implements ResourceProvider {
         this.logger.debug(`Updated image scanning configuration for ${physicalId}`);
       }
 
-      // Update ImageTagMutability if changed
+      // Update ImageTagMutability / ImageTagMutabilityExclusionFilters if
+      // changed. Both members ride the SAME PutImageTagMutability call, so the
+      // exclusion filters must be able to fire it on their own — a filters-only
+      // edit (`IMMUTABLE_WITH_EXCLUSION` throughout, only the filter values
+      // changing) would otherwise never reach AWS. `imageTagMutability` is a
+      // REQUIRED member of that request, so the filters-only case re-sends the
+      // current mutability value alongside the new filters.
       const newMutability = properties['ImageTagMutability'] as ImageTagMutability | undefined;
       const oldMutability = previousProperties['ImageTagMutability'] as
         | ImageTagMutability
         | undefined;
-      if (newMutability !== oldMutability) {
+      const newExclusionFilters = this.toSdkTagMutabilityExclusionFilters(
+        properties['ImageTagMutabilityExclusionFilters']
+      );
+      const oldExclusionFilters = this.toSdkTagMutabilityExclusionFilters(
+        previousProperties['ImageTagMutabilityExclusionFilters']
+      );
+      if (
+        newMutability !== oldMutability ||
+        JSON.stringify(newExclusionFilters) !== JSON.stringify(oldExclusionFilters)
+      ) {
         await this.getClient().send(
           new PutImageTagMutabilityCommand({
             repositoryName: physicalId,
             imageTagMutability: newMutability ?? 'MUTABLE',
+            // Omitted on removal, on the expectation that
+            // PutImageTagMutability is a full-replace setter rather than a
+            // patch. NOT probed against real AWS, because the case is not
+            // reachable: CFn/CDK reject filters without a `*_WITH_EXCLUSION`
+            // mode and reject an exclusion mode without filters, so a removal
+            // always rides a mutability change to a non-exclusion mode, where
+            // any surviving filters are inert.
+            ...(newExclusionFilters
+              ? { imageTagMutabilityExclusionFilters: newExclusionFilters }
+              : {}),
           })
         );
         this.logger.debug(`Updated image tag mutability for ${physicalId}`);
@@ -488,17 +568,20 @@ export class ECRProvider implements ResourceProvider {
    * (which `DescribeRepositories` doesn't return).
    *
    * Surfaced keys: `RepositoryName`, `ImageTagMutability`,
-   * `ImageScanningConfiguration`, `EncryptionConfiguration`, `LifecyclePolicy`
-   * (when configured — `LifecyclePolicyNotFoundException` is caught and the
-   * key omitted, NOT propagated as repo-gone).
+   * `ImageTagMutabilityExclusionFilters` (when the repository has any —
+   * `DescribeRepositories` returns them on the `Repository` shape, mapped back
+   * to the CFn member names), `ImageScanningConfiguration`,
+   * `EncryptionConfiguration`, `LifecyclePolicy` (when configured —
+   * `LifecyclePolicyNotFoundException` is caught and the key omitted, NOT
+   * propagated as repo-gone).
    *
    * Intentionally omitted:
    *   - `RepositoryPolicyText`: requires a separate `GetRepositoryPolicy`
    *     round-trip; cdkd state holds the policy as either a string or an
    *     object (depending on user input), and the comparator round-trip
    *     is not yet handled here.
-   *   - `EmptyOnDelete` / `ImageTagMutabilityExclusionFilters`: not part
-   *     of the persisted AWS state visible via standard Describe.
+   *   - `EmptyOnDelete`: a cdkd/CDK delete-time intent flag, not part of the
+   *     persisted AWS state visible via standard Describe.
    *
    * `Tags` is surfaced via a follow-up `ListTagsForResource(arn)` call
    * (using the repository ARN that `DescribeRepositories` returns). CDK's
@@ -517,6 +600,7 @@ export class ECRProvider implements ResourceProvider {
         repositoryName?: string;
         repositoryArn?: string;
         imageTagMutability?: string;
+        imageTagMutabilityExclusionFilters?: Array<{ filterType?: string; filter?: string }>;
         imageScanningConfiguration?: { scanOnPush?: boolean };
         encryptionConfiguration?: { encryptionType?: string; kmsKey?: string };
       }>;
@@ -535,6 +619,12 @@ export class ECRProvider implements ResourceProvider {
     const result: Record<string, unknown> = {};
     if (r.repositoryName !== undefined) result['RepositoryName'] = r.repositoryName;
     if (r.imageTagMutability !== undefined) result['ImageTagMutability'] = r.imageTagMutability;
+    const cfnExclusionFilters = this.toCfnTagMutabilityExclusionFilters(
+      r.imageTagMutabilityExclusionFilters
+    );
+    if (cfnExclusionFilters) {
+      result['ImageTagMutabilityExclusionFilters'] = cfnExclusionFilters;
+    }
     result['ImageScanningConfiguration'] = {
       ScanOnPush: r.imageScanningConfiguration?.scanOnPush ?? false,
     };

diff --git a/tests/integration/ecr-scanning/lib/ecr-scanning-stack.ts b/tests/integration/ecr-scanning/lib/ecr-scanning-stack.ts
@@ -15,13 +15,25 @@ import * as kms from 'aws-cdk-lib/aws-kms';
  * true` never reached AWS. This fixture asserts scanOnPush actually reaches AWS
  * on create AND that toggling it off via UPDATE reaches AWS.
  *
+ * ALSO covers issue #1392: `ImageTagMutabilityExclusionFilters` was declared in
+ * `handledProperties` but never sent — absent from `CreateRepository` and from
+ * update's `PutImageTagMutability` — so a repository's exclusions silently
+ * vanished, and a filters-only edit never reached AWS at all (the update fired
+ * on `ImageTagMutability` alone). The member names diverge too (CFn
+ * `ImageTagMutabilityExclusionFilterType` / `...Value` vs SDK `filterType` /
+ * `filter`), so the blob cannot be forwarded verbatim.
+ *
  * Phase 1 (no env): scanOnPush true + a lifecycle rule + two Tags
- *   (`env=dev`, `team=platform`).
+ *   (`env=dev`, `team=platform`) + IMMUTABLE_WITH_EXCLUSION with one
+ *   exclusion filter (`dev-*`).
  * Phase 2 (CDKD_TEST_UPDATE=true): scanOnPush false; the `env` tag value is
  *   CHANGED to `prod` and the `team` tag is REMOVED. This exercises the
  *   update() tag-diff: `ECRProvider.update()` used to call `TagResourceCommand`
  *   only (additive), so a removed tag survived on AWS (issue #981). The fix
  *   untags the removed key(s) via `UntagResourceCommand` before re-tagging.
+ *   The exclusion filters change to two DIFFERENT patterns while
+ *   `imageTagMutability` stays IMMUTABLE_WITH_EXCLUSION — a filters-ONLY edit,
+ *   which is precisely the case the pre-#1392 update() gate skipped.
  */
 export class EcrScanningStack extends cdk.Stack {
   constructor(scope: Construct, id: string, props?: cdk.StackProps) {
@@ -38,10 +50,22 @@ export class EcrScanningStack extends cdk.Stack {
       pendingWindow: cdk.Duration.days(7),
     });
 
+    // Phase 1: one exclusion filter. Phase 2: two DIFFERENT patterns, with
+    // imageTagMutability unchanged — the filters-only update that pre-#1392
+    // never reached AWS, because both members ride the same
+    // PutImageTagMutability call and only a mutability change could fire it.
+    const exclusionFilters = isUpdate
+      ? [
+          ecr.ImageTagMutabilityExclusionFilter.wildcard('release-v*'),
+          ecr.ImageTagMutabilityExclusionFilter.wildcard('hotfix-*'),
+        ]
+      : [ecr.ImageTagMutabilityExclusionFilter.wildcard('dev-*')];
+
     const repo = new ecr.Repository(this, 'Repo', {
       repositoryName: `${this.stackName.toLowerCase()}-repo`,
       imageScanOnPush: !isUpdate,
-      imageTagMutability: ecr.TagMutability.IMMUTABLE,
+      imageTagMutability: ecr.TagMutability.IMMUTABLE_WITH_EXCLUSION,
+      imageTagMutabilityExclusionFilters: exclusionFilters,
       encryption: ecr.RepositoryEncryption.KMS,
       encryptionKey: key,
       lifecycleRules: [{ description: 'keep last 5', maxImageCount: 5 }],

diff --git a/tests/integration/ecr-scanning/verify.sh b/tests/integration/ecr-scanning/verify.sh
@@ -12,12 +12,23 @@
 # TagResourceCommand only (additive), so a tag removed from the template
 # survived on AWS. The fix untags removed keys via UntagResourceCommand.
 #
+# ALSO covers issue #1392: ImageTagMutabilityExclusionFilters was declared in
+# handledProperties but sent on NO API call — omitted from CreateRepository and
+# from update's PutImageTagMutability — so the exclusions silently vanished
+# while the property-coverage pre-flight passed on the false handled claim. The
+# member names diverge as well (CFn ImageTagMutabilityExclusionFilterType /
+# ...Value vs SDK filterType / filter). The update gate also fired on
+# ImageTagMutability alone, so a filters-ONLY edit never reached AWS.
+#
 # Phases:
-#   1. Deploy with imageScanOnPush=true + Tags env=dev, team=platform. Assert
-#      AWS reports scanOnPush=true and both tags are present.
+#   1. Deploy with imageScanOnPush=true + Tags env=dev, team=platform +
+#      IMMUTABLE_WITH_EXCLUSION with one exclusion filter (dev-*). Assert AWS
+#      reports scanOnPush=true, both tags, and the filter.
 #   2. Re-deploy (CDKD_TEST_UPDATE=true) with imageScanOnPush=false, env changed
-#      to prod, team REMOVED. Assert scanOnPush=false, env=prod, team untagged,
-#      and exactly one user tag remains.
+#      to prod, team REMOVED, and the exclusion filters changed to two DIFFERENT
+#      patterns with imageTagMutability UNCHANGED. Assert scanOnPush=false,
+#      env=prod, team untagged, exactly one user tag remains, and the new
+#      filters reached AWS (the filters-only update path).
 #   3. Destroy + assert the repo is gone and the cdkd state file is removed.
 #
 # Required env vars: STATE_BUCKET; AWS_REGION (defaults us-east-1).
@@ -96,6 +107,30 @@ scan_on_push() {
     --query 'repositories[0].imageScanningConfiguration.scanOnPush' --output text
 }
 
+tag_mutability() {
+  aws ecr describe-repositories --repository-names "${REPO}" --region "${REGION}" \
+    --query 'repositories[0].imageTagMutability' --output text
+}
+
+# The exclusion filter PATTERNS, sorted and space-joined. AWS does not preserve
+# the submitted order of list-valued members on readback, so both sides of the
+# comparison are sorted (the null-list coalesce keeps an empty list from
+# aborting the script under set -e).
+exclusion_filter_patterns() {
+  aws ecr describe-repositories --repository-names "${REPO}" --region "${REGION}" \
+    --query "join(' ', sort(repositories[0].imageTagMutabilityExclusionFilters[].filter || \`[]\`))" \
+    --output text
+}
+
+# The filter types, sorted and space-joined (one entry per filter, no dedupe) —
+# proves the diverging member name (CFn ImageTagMutabilityExclusionFilterType ->
+# SDK filterType) reached AWS rather than arriving as an empty object.
+exclusion_filter_types() {
+  aws ecr describe-repositories --repository-names "${REPO}" --region "${REGION}" \
+    --query "join(' ', sort(repositories[0].imageTagMutabilityExclusionFilters[].filterType || \`[]\`))" \
+    --output text
+}
+
 # Read a single tag's value via list-tags-for-resource. Emits the value or
 # 'NONE' when the key is absent (JMESPath `[?Key==...] | [0].Value` -> null ->
 # printed as literal "None" by --output text; we normalize to NONE for the
@@ -148,6 +183,17 @@ echo "    tags (Phase 1): env=${ENVTAG1} team=${TEAMTAG1}"
 [ "${TEAMTAG1}" = "platform" ] || { echo "FAIL: expected team=platform on create, got '${TEAMTAG1}'" >&2; exit 1; }
 echo "    both tags reached AWS on create"
 
+# ImageTagMutabilityExclusionFilters on create (issue #1392). Pre-fix the
+# property never reached CreateRepository at all.
+MUT1="$(tag_mutability)"
+FILTERS1="$(exclusion_filter_patterns)"
+FTYPES1="$(exclusion_filter_types)"
+echo "    mutability (Phase 1): ${MUT1} filters=[${FILTERS1}] types=[${FTYPES1}]"
+[ "${MUT1}" = "IMMUTABLE_WITH_EXCLUSION" ] || { echo "FAIL: expected imageTagMutability=IMMUTABLE_WITH_EXCLUSION, got '${MUT1}'" >&2; exit 1; }
+[ "${FILTERS1}" = "dev-*" ] || { echo "FAIL: expected exclusion filter 'dev-*' on create, got '${FILTERS1}'" >&2; exit 1; }
+[ "${FTYPES1}" = "WILDCARD" ] || { echo "FAIL: expected filterType WILDCARD on create, got '${FTYPES1}'" >&2; exit 1; }
+echo "    exclusion filters reached AWS on create"
+
 # --- Phase 2: UPDATE scanOnPush=false ---------------------------------
 echo "==> Phase 2: re-deploy with imageScanOnPush=false (UPDATE)"
 CDKD_TEST_UPDATE=true node "${LOCAL_DIST}" deploy "${STACK}" \
@@ -169,6 +215,19 @@ echo "    tags (Phase 2): env=${ENVTAG2} team=${TEAMTAG2} user_tag_count=${UTC2}
 [ "${UTC2}" = "1" ] || { echo "FAIL: expected exactly 1 user tag after update (env only), got '${UTC2}'" >&2; exit 1; }
 echo "    removed tag untagged + changed tag updated on AWS"
 
+# Filters-ONLY update (issue #1392): imageTagMutability is identical across
+# both phases, so pre-fix the PutImageTagMutability call never fired and the
+# Phase 1 filter survived on AWS.
+MUT2="$(tag_mutability)"
+FILTERS2="$(exclusion_filter_patterns)"
+FTYPES2="$(exclusion_filter_types)"
+echo "    mutability (Phase 2): ${MUT2} filters=[${FILTERS2}] types=[${FTYPES2}]"
+[ "${MUT2}" = "IMMUTABLE_WITH_EXCLUSION" ] || { echo "FAIL: expected imageTagMutability to stay IMMUTABLE_WITH_EXCLUSION, got '${MUT2}'" >&2; exit 1; }
+[ "${FILTERS2}" = "hotfix-* release-v*" ] || { echo "FAIL: expected the changed exclusion filters 'hotfix-* release-v*' after a filters-only update, got '${FILTERS2}'" >&2; exit 1; }
+# One entry per filter (no dedupe), so both mapped entries must carry the type.
+[ "${FTYPES2}" = "WILDCARD WILDCARD" ] || { echo "FAIL: expected both filters to carry filterType WILDCARD after update, got '${FTYPES2}'" >&2; exit 1; }
+echo "    filters-only update reached AWS"
+
 # --- Phase 3: destroy --------------------------------------------------
 echo "==> Phase 3: destroy"
 node "${LOCAL_DIST}" destroy "${STACK}" --state-bucket "${STATE_BUCKET}" --region "${REGION}" --force
@@ -178,4 +237,4 @@ echo "    repo deleted"
 assert_gone "state file still exists after destroy" aws s3api head-object --bucket "${STATE_BUCKET}" --key "${STATE_KEY}"
 echo "    cdkd state removed"
 
-echo "[verify] PASS — ECR scanOnPush (CFn->SDK casing) + tag add/change/untag on update reach AWS, 3 phases passed"
+echo "[verify] PASS — ECR scanOnPush (CFn->SDK casing) + tag add/change/untag on update + ImageTagMutabilityExclusionFilters on create and on a filters-only update reach AWS, 3 phases passed"