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VulnerabilityPublished

CVE-2026-123009: Gitea · Improper Access Control

Affects GiteaSource CVE Database V5

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Not known to be exploited : upgrade to 28.4.0 soon.

Data as of 15 Nov 2026, 21:35 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 28.4.0

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 15 Nov 2026.

What to do

Upgrade Gitea to 28.4.0.

Affected software

ProductAffectedFixed in
Giteagitea.devAffected
  • >=1.25.0 <28.4.0
Fixed in
  • 28.4.0

AI-suggested

Upgrade Gitea to version 28.4.0 or later, where the vulnerability is fixed by requiring read access to the base repository before copying branches into a fork. No other mitigation is indicated or required.

Description

CVE-2026-123009 is an improper access control vulnerability in Gitea affecting versions from 1.25.0 up to but not including 28.4.0. It allows a user who previously forked a repository and then lost access to the base repository (e.g., due to it becoming private or removal as a collaborator) to still copy branches from the base repository into their fork via the web editor and read its code. The issue was that the copy operation did not verify read permissions on the base repository. This flaw has been fixed starting with version 28.4.0, where read access is now required to copy branches from the base repository.

References

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