CVE-2022-39260
Git vulnerable to Remote Code Execution via Heap overflow in `git shell`
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments into an array improperly uses an `int` to represent the number of entries in the array, allowing a malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version. Disabling `git shell` access via remote logins is a viable short-term workaround.
Timeline
ID reserved
By GitHub_M
- 47 days later
· 47 days later
Published
- 22 months later
· 22 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_MCNA (assigner) | 3.1 | High8.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.4% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Weakness
Affected products
References (8)
- https://github.com/git/git/security/advisories/GHSA-rjr6-wcq6-83p6 (opens in a new tab)x_transferred
- FEDORA-2022-8b58806840 (opens in a new tab)vendor-advisoryx_transferred
- https://support.apple.com/kb/HT213496 (opens in a new tab)x_transferred
- FEDORA-2022-53aadd995f (opens in a new tab)vendor-advisoryx_transferred
- 20221107 APPLE-SA-2022-11-01-1 Xcode 14.1 (opens in a new tab)mailing-listx_transferred
- FEDORA-2022-fb088df94c (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20221213 [SECURITY] [DLA 3239-1] git security update (opens in a new tab)mailing-listx_transferred
- GLSA-202312-15 (opens in a new tab)vendor-advisoryx_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-2022-39260)Record last updated .