Detections
Analytics

SCA: security update for isomorphic-git (GHSA-cw2g-2vwq-88w6)

medium Tenable Cloud Security Plugin ID 478831

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - isomorphic-git is a pure JavaScript implementation of Git for Node.js and browsers. Prior to 1.38.6,
 isomorphic-git's tree parser in src/models/GitTree.js accepts a standalone .. tree-entry name because it
 rejects only path separators. During clone or checkout from a malicious or man-in-the-middle-controlled
 non-GitHub remote, nested .. entries can escape the working-tree root and write files at attacker-selected
 parent paths on any host-backed fs provider. The arbitrary file write can overwrite startup or
 configuration files and lead to code execution. GitHub-hosted trees are not a direct source because GitHub
 rejects .. entries during repository integrity checks. This issue is fixed in version 1.38.6.
 (CVE-2026-63478)

Solution

Update the isomorphic-git library and its related packages to version 1.38.6 or later.

See Also

https://github.com/advisories/GHSA-cw2g-2vwq-88w6

Plugin Details

Severity: Medium

ID: 478831

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 11/9/2026

Updated: 11/9/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.75

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-63478

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2026

Vulnerability Publication Date: 11/3/2026

Reference Information

CVE: CVE-2026-63478

cwe: CWE-22