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TI-2026-76205 Aliases CVE-2026-110494

Authorization bypass in Gitea release attachments

Priority LOW 27CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-639.

Summary

Gitea versions through 28.1.0 are affected. Adding an attachment to a release does not check whether the attachment is already linked to an issue or comment, an authorization bypass through a user-controlled key (CWE-639). A user with write access to a repository's releases who knows the UUID of an attachment in that repository can link it to a release, exposing its file name, size and download count and allowing it to be renamed or deleted.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Adding attachments to a release checked the repository and release of an attachment but not whether it was already linked to an issue or comment. A user with write access to the releases of a repository, who knew the UUID of an attachment in that repository, could link it to a release. This exposed the file name, size and download count of the attachment through the release and allowed the user to rename or delete it.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00198 9th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GiteaGiteaup to 28.1.0—No fix listedCNA
  • Gitea VendorGitea Affected up to 28.1.0 Fixed in — No fix listed CNA

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

The sources list no fixed version for Gitea.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-110494
  2. 2026-10-20 CVSS score added · CISA ADP
  3. 2026-10-20 CISA SSVC decision points changed

References

Patch 2

Advisory 1

Other 2

  • 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