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Medium severity · published Aug 20, 2026
CVE-2026-53584
libgit2: Submodule path traversal
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libgit2 · libgit2
< 1.8.6; >= 1.9.0, < 1.9.5 · source: vendor
Affected product
LI
libgit2
libgit2
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53584
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53584
github.com
https://github.com/libgit2/libgit2/commit/419637d3587396f5d139d6d88480eab3cd81e7a1
github.com
https://github.com/libgit2/libgit2/commit/467c2d95ed663df722f83a5960edf568514b128c
github.com
https://github.com/libgit2/libgit2/commit/ec7371da9f359cd8293e9108e7a0b1c1b61b67c4
github.com
https://github.com/libgit2/libgit2/releases/tag/v1.8.6
github.com
https://github.com/libgit2/libgit2/releases/tag/v1.9.5
github.com
https://github.com/libgit2/libgit2/security/advisories/GHSA-cw77-j82w-mchm
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