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Gitea's /api/v1/user endpoint has different responses for failed authentication depending on whether a username exists

Moderate severity GitHub Reviewed Published Jan 1, 2026 to the GitHub Advisory Database • Updated Jan 2, 2026

Package

gomod code.gitea.io/gitea (Go)

Affected versions

< 1.25.2

Patched versions

1.25.2

Description

In Gitea before 1.25.2, /api/v1/user has different responses for failed authentication depending on whether a username exists.

References

Published by the National Vulnerability Database Jan 1, 2026
Published to the GitHub Advisory Database Jan 1, 2026
Reviewed Jan 2, 2026
Last updated Jan 2, 2026

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(21st percentile)

Weaknesses

Observable Response Discrepancy

The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. Learn more on MITRE.

CVE ID

CVE-2025-69413

GHSA ID

GHSA-pc73-rj2c-wvf9

Source code

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