Bug 2523215 (CVE-2026-78677)

Summary: CVE-2026-78677 GitPython: GitPython: Arbitrary Code Execution via Path Traversal
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: alinfoot, anthomas, bbrownin, dfreiber, drow, dschmidt, dtrifiro, eglynn, ehelms, gbenhaim, ggainey, ikhan, ilpinto, jburrell, jdobes, jjoyce, jlanda, jmitchel, jpasqual, jpretori, jschluet, juwatts, kaycoth, kshier, lhh, ltomasbo, mburns, mdellweg, mgarciac, mhulan, niyer, nmoumoul, orabin, osousa, pcreech, rbobbitt, rchan, rjohnson, simaishi, smallamp, stcannon, tmalecek, twaugh, vkumar, weaton, yguenane, ykashtan
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in GitPython. This vulnerability allows a remote attacker to create arbitrary Git directories outside the intended clone destination. By manipulating the `separate_git_dir` parameter during repository cloning, an attacker can redirect repository metadata to an attacker-controlled filesystem path. This could lead to arbitrary directory creation and potentially enable the execution of malicious code through Git hooks.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2542057, 2542058    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-25 01:53:49 UTC 
GitPython before 3.1.59 omits --separate-git-dir from unsafe_git_clone_options, allowing attackers to create arbitrary git directories outside the intended clone destination. Attackers can pass a separate_git_dir parameter to Repo.clone_from() or Repo.clone() to redirect repository metadata to an attacker-controlled filesystem path, enabling arbitrary directory creation and potential hook execution.