Read the docs
TI-2026-22913 Aliases CVE-2026-28699GHSA-9r5x-wg6m-x2rc

Gitea Basic Auth bypasses OAuth2 access token scopes

Priority HIGH 70CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-284.

Summary

Gitea versions up to and including 1.26.1 allow OAuth2 access token scope enforcement to be bypassed through HTTP Basic authentication.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00551 46th percentileScored 2026-11-07
Fix Fixed code.gitea.io/gitea (Go): 1.26.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GiteaGitea Open Source Git Serverup to 1.26.1—No fix listedCNA
—code.gitea.io/gitea (Go)before 1.26.21.26.2Patch availableGHSA-9r5x-wg6m-x2rc
  • Gitea Open Source Git Server VendorGitea Affected up to 1.26.1 Fixed in — No fix listed CNA
  • code.gitea.io/gitea (Go) Vendor— Affected before 1.26.2 Fixed in 1.26.2 Patch available GHSA-9r5x-wg6m-x2rc

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*——Gitea
  • cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:* Versions — — ·Gitea

Remediation

  • Fix · GHSA-9r5x-wg6m-x2rc code.gitea.io/gitea (Go) Fixed in 1.26.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28699
  2. 2026-10-03 Alias added: GHSA-9r5x-wg6m-x2rc

References

Patch 1

Advisory 1

Other 3

  • TI-2026-42785 Gitea before 1.27.1 allows remote code execution via the diffpatch API through Git hook installation. KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-42033 Improper authorization on OAuth sign-in callback silently re-enables administrator-disabled accounts CVSS 3.1CRITICAL 9.8
  • TI-2026-40842 Privilege Escalation via Access Token Scope Escalation in API CVSS 3.1CRITICAL 9.8
  • TI-2026-16922 Gitea Docker image trusts spoofable reverse-proxy headers by default CVSS 3.1CRITICAL 9.8
  • TI-2026-42043 Team-repository linking endpoint bypasses the RepoAdminChangeTeamAccess organization setting CVSS 3.1CRITICAL 9.1
  • TI-2026-40381 OIDC userinfo Endpoint Returns Identity Claims Without Enforcing API Token Scopes CVSS 3.1CRITICAL 9.1
See all 240 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences