Bug 2521734

Summary: CVE-2026-53584 libgit2: libgit2: Submodule path traversal allows arbitrary directory creation [epel-all]
Product: [Fedora] Fedora EPEL Reporter: Vladimir Vasilev <vvasilev>
Component: libgit2Assignee: Fabio Valentini <decathorpe>
Status: ASSIGNED --- QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: epel10CC: alf.henrik.sauge, decathorpe, i, infra-sig, sgallagh
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["be93a537-ce16-41f3-81c3-4f23075be4c4"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 2520695    

Description Vladimir Vasilev 2026-08-24 07:37:42 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 does not reject traversal components in a submodule path loaded from .gitmodules. The affected src/libgit2/submodule.c paths include git_submodule_lookup and git_submodule_add_setup. A crafted repository can specify a path such as ../escape-target, and applications that initialize the submodule can create directories outside the repository working tree. This issue is fixed in versions 1.8.6 and 1.9.5.
Comment 1 Fabio Valentini 2026-08-27 12:50:28 UTC 
I am working on moving all dependent packages from the out-of-support libgit2 v1.7 to libgit2_1.9:
https://lists.fedoraproject.org/archives/list/epel-devel@lists.fedoraproject.org/thread/BOJI6KPDIRTZZ7LZQW37RM7V7EK33DF7/#BOJI6KPDIRTZZ7LZQW37RM7V7EK33DF7