Regular Expression without Anchors in git-lfs - CVE-2026-105803
Published: October 27, 2026
Vulnerability identifier: #VU158061
CSH Severity: High
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105803
CWE-ID: CWE-777
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands on a victim's system.
The vulnerability exists due to a regular expression without anchors in Git LFS configuration filtering when processing repository-supplied .lfsconfig files during object fetching. A remote attacker can supply a malicious repository containing configuration keys with additional components that bypass filtering and mimic custom object transfer options to execute arbitrary commands on the victim's system.
Affected software
git-lfs
How to mitigate CVE-2026-105803
Install security update from vendor's website.
git-lfs - update to 3.8.1