CVE-2026-27775: CWE-863 in Gitea Gitea Open Source Git Server
Gitea version 1.25.5 has a vulnerability where branch-specific write permissions are cached improperly during a pre-receive hook session. This flaw allows a user with per-branch maintainer-edit rights to reuse that permission across other refs, effectively escalating their access to full repository write privileges. The vulnerability is classified under CWE-863 and carries a high severity score of 8.8.
AI Analysis
Technical Summary
CVE-2026-27775 in Gitea 1.25.5 involves improper caching of branch-specific write-permission results across multiple refs within a single pre-receive hook session. This enables an attacker who has maintainer-edit permissions on one branch to leverage that cached permission to gain write access to the entire repository, thereby escalating privileges beyond intended scope. The vulnerability is identified as CWE-863 (Incorrect Authorization).
Potential Impact
An attacker with limited write permissions on a specific branch can escalate their privileges to gain full write access to the entire repository. This can lead to unauthorized code changes, potential data integrity issues, and compromise of the repository's security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict maintainer-edit permissions carefully and monitor repository access closely.
CVE-2026-27775: CWE-863 in Gitea Gitea Open Source Git Server
Description
Gitea version 1.25.5 has a vulnerability where branch-specific write permissions are cached improperly during a pre-receive hook session. This flaw allows a user with per-branch maintainer-edit rights to reuse that permission across other refs, effectively escalating their access to full repository write privileges. The vulnerability is classified under CWE-863 and carries a high severity score of 8.8.
CVSS v3.1
Score 8.8high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-27775 in Gitea 1.25.5 involves improper caching of branch-specific write-permission results across multiple refs within a single pre-receive hook session. This enables an attacker who has maintainer-edit permissions on one branch to leverage that cached permission to gain write access to the entire repository, thereby escalating privileges beyond intended scope. The vulnerability is identified as CWE-863 (Incorrect Authorization).
Potential Impact
An attacker with limited write permissions on a specific branch can escalate their privileges to gain full write access to the entire repository. This can lead to unauthorized code changes, potential data integrity issues, and compromise of the repository's security.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict maintainer-edit permissions carefully and monitor repository access closely.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Gitea
- Date Reserved
- 2026-03-03T03:25:59.996Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4820fe27e9c79719acc077
Added to database: 07/03/2026, 20:52:14 UTC
Last enriched: 07/22/2026, 00:39:27 UTC
Last updated: 08/12/2026, 00:41:11 UTC
Views: 93
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