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CVE-2026-26232 — Vulnerability in code.gitea.io/gitea — CVE Details

CRITICAL

Gitea OAuth2 authorization codes can be reused after expiry

Published July 3, 2026Updated September 2, 2026Source: osv

Summary

Gitea versions before 1.25.5 do not consistently enforce OAuth2 authorization code expiry and single-use behavior during token exchange.

Advisory Timeline

  • First published July 3, 2026 (101 days ago).
  • Last revised September 2, 2026 — 61 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update code.gitea.io/gitea to 1.25.5 or later
go get code.gitea.io/gitea@v1.25.5

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
code.gitea.io/gitea
go
All versions1.25.5

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Frequently Asked Questions

What is CVE-2026-26232?
Gitea OAuth2 authorization codes can be reused after expiry This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.1/10).
How do I check if my project is affected by CVE-2026-26232?
CVE-2026-26232 affects code.gitea.io/gitea. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-26232 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.1

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-5v69-g2m3-3hq3
GO-2026-6336

Related CVEs

  • CVE-2026-22547
    CRITICAL

    Gitea repository creation accepts insufficiently validated fields

  • CVE-2026-20896
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  • CVE-2026-27775
    HIGH

    Gitea: Cached Per-Branch Permission Check in Pre-Receive Hook Allows Full Repository Write

  • CVE-2026-56654
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  • CVE-2026-58424
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    Gitea: Permanent Fork PR Workflow Approval Gate Bypass

  • CVE-2026-57894
    HIGH

    Gitea: Repository Migration Follows Git HTTP Redirects After URL Allow/Block Validation, Enabling Internal Git Repository Exfiltration

  • CVE-2026-27771
    HIGH

    Gitea has insufficient permission checks for Composer package source links

  • CVE-2026-28737
    HIGH

    Gitea: Stored XSS via glTF `extensionsRequired` in Gitea 3D File Viewer

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