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TI-2026-74027 Aliases CVE-2026-73800

Reusable workflow secret exposure in Gitea pull_request_target

Priority MEDIUM 41CWE-829Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-829.

Summary

Gitea from 1.19.0 before 1.27.2 resolves local reusable workflow files from a fork's head commit when a trusted base-branch workflow runs for a pull_request_target event. A fork author who modifies a referenced reusable workflow can run attacker-controlled code with the repository and organization secrets available to that event. The flaw is an inclusion of functionality from an untrusted control sphere (CWE-829), and the attack needs a base workflow that calls a local reusable workflow.

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

Description from the CNA

Gitea resolves local reusable workflow files from a fork's head commit when a trusted base-branch workflow runs for a pull_request_target event. A fork author can modify a referenced reusable workflow so attacker-controlled code executes with the repository and organization secrets available to that event. Exploitation requires a base workflow that calls a local reusable workflow, and bypasses the intended separation between trusted base code and untrusted fork code.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00535 45th percentileScored 2026-11-07
Fix Fixed Gitea (Gitea): 1.27.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
GiteaGitea1.19.0 to before 1.27.21.27.2Patch availableCNA
  • Gitea VendorGitea Affected 1.19.0 to before 1.27.2 Fixed in 1.27.2 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 1.27.2, the fixed version for the affected releases from 1.19.0 before 1.27.2.

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

  • Fix · CNA Gitea (Gitea) Fixed in 1.27.2

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-73800
  2. 2026-10-18 CVSS score added · CISA ADP
  3. 2026-10-18 CISA SSVC decision points changed
  4. 2026-10-19 Priority changed: LOW → MEDIUM
  5. 2026-10-20 Affected versions changed · Red Hat
  6. 2026-10-20 CVSS score added · Red Hat

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