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5.3
GitHub Enterprise Server: Unauthorized Project Modifications Possible
CVE-2026-3306
Summary
A security issue in GitHub Enterprise Server allowed users with read access to a repository and write access to a project to modify certain project settings and issue information. This could have allowed unauthorized changes to be made to a project. To fix this, make sure to update your GitHub Enterprise Server to version 3.14.24 or later.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| github | enterprise_server | <= 3.14.24 | – |
| github | enterprise_server | > 3.15.0 , <= 3.15.19 | – |
| github | enterprise_server | > 3.16.0 , <= 3.16.15 | – |
| github | enterprise_server | > 3.17.0 , <= 3.17.12 | – |
| github | enterprise_server | > 3.18.0 , <= 3.18.6 | – |
| github | enterprise_server | > 3.19.0 , <= 3.19.3 | – |
Original title
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull reques...
Original description
An improper authorization vulnerability was identified in GitHub Enterprise Server that allowed a user with read access to a repository and write access to a project to modify issue and pull request metadata through the project. When adding an item to a project that already existed, column value updates were applied without verifying the actor's repository write permissions. This vulnerability was reported via the GitHub Bug Bounty program and has been fixed in GitHub Enterprise Server versions 3.14.24, 3.15.19, 3.16.15, 3.17.12, 3.18.6 and 3.19.3.
nvd CVSS4.0
5.3
Vulnerability type
CWE-639
Authorization Bypass Through User-Controlled Key
- https://docs.github.com/en/[email protected]/admin/release-notes#3.14.24
- https://docs.github.com/en/[email protected]/admin/release-notes#3.15.19
- https://docs.github.com/en/[email protected]/admin/release-notes#3.16.15
- https://docs.github.com/en/[email protected]/admin/release-notes#3.17.12
- https://docs.github.com/en/[email protected]/admin/release-notes#3.18.6
- https://docs.github.com/en/[email protected]/admin/release-notes#3.19.3
Published: 10 Mar 2026 · Updated: 13 Mar 2026 · First seen: 11 Mar 2026