Is CVE-2026-53584 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-53584?

CVE-2026-53584 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-53584

Description

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.