CVE-2026-3306An 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…
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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.
- CVSS
- 4.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
github enterprise_server github:enterprise_server | before 3.14.24; from 3.15.0 before 3.15.19; from 3.16.0 before 3.16.15; from 3.17.0 before 3.17.12; from 3.18.0 before 3.18.6; from 3.19.0 before 3.19.3 | NVD |
References
- https://docs.github.com/en/enterprise-server@3.14/admin/release-notes#3.14.24release-notes
- https://docs.github.com/en/enterprise-server@3.15/admin/release-notes#3.15.19release-notes
- https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.15release-notes
- https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.12release-notes
- https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.6release-notes
- https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.3release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.