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TI-2026-83602 Aliases CVE-2026-118386

Incorrect authorization in Gitea Actions review-triggered workflows

Priority LOW 28CWE-863Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

Gitea from 1.19.0 before 28.3.0 reads review-triggered workflows from an unchecked commit named in the review (CWE-863). A user with read access can place a commit through a fork pull request or AGit push and submit a review naming it, so the workflow runs without approval on instances with a runner serving the repository. It then receives the repository's and owner's Actions secrets and a write-access GITEA_TOKEN.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Workflows triggered by a pull request review were read from the commit named in the review's `commit_id`, while the fork restrictions were decided by the reviewed pull request, and the commit was not checked to belong to that pull request. A user with read access to a repository could place a commit of their own in it, through a fork pull request or an AGit push, and submit a review naming that commit on a pull request whose head branch is in the same repository. On instances with a runner serving the repository, the attacker's workflow then ran without approval, received the Actions secrets of the repository and its owner, and got a `GITEA_TOKEN` with write access to the repository. Review-triggered workflows now run on the pull request head.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00238 14th percentileScored 2026-11-07
Fix Fixed Gitea (Gitea): 28.3.0

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
GiteaGitea1.19.0 to before 28.3.028.3.0Patch availableCNA
  • Gitea VendorGitea Affected 1.19.0 to before 28.3.0 Fixed in 28.3.0 Patch available 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

Upgrade Gitea to version 28.3.0, which runs review-triggered workflows on the pull request head.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Gitea (Gitea) Fixed in 28.3.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Gitea 28.3.0

    20 records Highest priority Priority MEDIUM 3 MEDIUM, 17 LOW

    Other records, highest priority first

    • TI-2026-83610 Gitea OAuth2 auto-linking lets attackers take over accountsPriority MEDIUM 49
    • TI-2026-83601 Gitea public-only token can expose private OCI blobs through package mountsPriority MEDIUM 47
    • TI-2026-83594 Gitea public-only token bypass exposes private repository jobsPriority MEDIUM 47
    Show all 20 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-01 Threatist record created from CVE-2026-118386
  2. 2026-11-06 Affected versions changed · Red Hat
  3. 2026-11-06 CVSS score added · Red Hat
  4. 2026-11-06 CVSS score added · CISA ADP
  5. 2026-11-06 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