Uncontrolled Recursion in isomorphic-git - CVE-2026-63475
Published: August 5, 2026
Vulnerability identifier: #VU141012
CSH Severity: Low
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-63475
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in GitRefManager.resolve() when resolving server-supplied symbolic references written during a clone. A remote attacker can advertise circular symref capabilities to cause a denial of service.
User interaction is required to clone from a malicious or man-in-the-middle server.
Affected software
isomorphic-git
How to mitigate CVE-2026-63475
Install security update from vendor's website.
isomorphic-git - update to 1.38.6