CVE-2023-23766
Incorrect comparison vulnerability in GitHub Enterprise Server leading to commit smuggling
- Published
- Updated
- Reserved
- Assigned by
- GitHub_P
Description
An incorrect comparison vulnerability was identified in GitHub Enterprise Server that allowed commit smuggling by displaying an incorrect diff in a re-opened Pull Request. To do so, an attacker would need write access to the repository. This vulnerability affected all versions of GitHub Enterprise Server and was fixed in versions 3.6.17, 3.7.15, 3.8.8, 3.9.3, and 3.10.1. This vulnerability was reported via the GitHub Bug Bounty program.
Timeline
ID reserved
By GitHub_P
- 8 months later
· 8 months later
Published
- 12 months later
· 12 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_PCNA (assigner) | 3.1 | Medium4.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.74% · top 45% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.5.
Weakness
Affected products
- affected 3.6.0 – < 3.6.17
- affected 3.7.0 – < 3.7.15
- affected 3.8.0 – < 3.8.8
- affected 3.9.0 – < 3.9.3
- affected 3.10.0 – < 3.10.1
References (5)
- https://docs.github.com/[email protected]/admin/release-notes#3.6.17 (opens in a new tab)x_transferred
- https://docs.github.com/[email protected]/admin/release-notes#3.7.15 (opens in a new tab)x_transferred
- https://docs.github.com/[email protected]/admin/release-notes#3.8.8 (opens in a new tab)x_transferred
- https://docs.github.com/[email protected]/admin/release-notes#3.9.3 (opens in a new tab)x_transferred
- https://docs.github.com/[email protected]/admin/release-notes#3.10.1 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-23766)Record last updated .