legit · GitPython: clone_from()/clone() omit --separate-git-dir from unsafe_git_clone_options, enabling arbitrary
Affects legitSource GCVE Database
Not known to be exploited · CVSS 8.7 High : upgrade to 1.2.0.post0_15 soon.
Data as of 26 Oct 2026, 19:00 UTC
- Patch
- Available – fixed in 1.2.0.post0_15
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 2026.
What to do
Upgrade legit to 1.2.0.post0_15.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Homebrewlegitpkg:brew/legitOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available in GitPython version 1.2.0.post0_15 that adds --separate-git-dir to the unsafe_git_clone_options denylist, preventing its use unless allow_unsafe_options=True is explicitly set. Users should upgrade to this fixed version to mitigate the vulnerability. Until upgraded, applications should avoid forwarding separate_git_dir or separate-git-dir options to Repo.clone_from() or Repo.clone() with allow_unsafe_options=False. No other mitigations are specified or required.
Description
GitPython versions prior to 1.2.0.post0_15 have a vulnerability in the clone_from() and clone() methods where the --separate-git-dir option is not blocked by the unsafe_git_clone_options denylist. This allows an attacker controlling input to specify an arbitrary filesystem path for the Git metadata directory during a clone operation, enabling creation of repository metadata outside the intended clone destination.
References
- github.com/gitpython-developers/GitPython/security/advisories/GHSA-8mcc-hrx5-hvxc (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-78677 (opens in a new tab)
- github.com/gitpython-developers/GitPython/pull/2210 (opens in a new tab)
- github.com/gitpython-developers/GitPython/commit/b68afff45af0f49e79a3e2d2162018986b37ad5d (opens in a new tab)
- github.com/gitpython-developers/GitPython (opens in a new tab)
- github.com/gitpython-developers/GitPython/releases/tag/3.1.59 (opens in a new tab)
- github.com/pypa/advisory-database/tree/main/vulns/gitpython/PYSEC-2026-3787.yaml (opens in a new tab)
- vulncheck.com/advisories/gitpython-before-path-traversal-via-separate-git-dir (opens in a new tab)