SB2026080555 - Path traversal in isomorphic-git

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Main Vulnerability Database SB2026080555

SB2026080555 - Path traversal in isomorphic-git

Published: August 5, 2026

Security Bulletin ID SB2026080555
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Path traversal (CVE-ID: N/A)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to modify trusted repository metadata and potentially execute arbitrary code in follow-on native Git or compatible tool actions.

The vulnerability exists due to path traversal in src/models/GitTree.js when processing crafted repository tree entries during clone() or checkout on Windows NTFS. A remote attacker can supply a repository containing a .git::$INDEX_ALLOCATION tree entry to modify trusted repository metadata and potentially execute arbitrary code in follow-on native Git or compatible tool actions.

User interaction is required to clone or check out the crafted repository, and the demonstrated command execution occurs later when native Git or another compatible tool processes the poisoned gitdir contents.


Remediation

Install update from vendor's website.

References