CVE-2026-123009: Gitea · Improper Access Control
Affects GiteaSource CVE Database V5
Not known to be exploited : upgrade to 28.4.0 soon.
Data as of 15 Nov 2026, 21:35 UTC
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
Disclosed: evidence found.
CVE published 15 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
| Giteagitea.dev | Affected
| Fixed in
|
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
- github.com/go-gitea/gitea/security/advisories/GHSA-9vh6-6hgj-j5m5 (opens in a new tab)
- github.com/go-gitea/gitea/pull/40131 (opens in a new tab)
- github.com/go-gitea/gitea/pull/40281 (opens in a new tab)
- blog.gitea.com/release-of-28.4.0/ (opens in a new tab)
- github.com/go-gitea/gitea/releases/tag/v28.4.0 (opens in a new tab)