Path Traversal in Isaacs Node-tar
CVE-2026-31802
node-tar is a full-featured Tar for Node.js. Prior to version 7.5.11, tar (npm) can be tricked into creating a symlink that points outside the extraction directory by using a drive-relative symlink target such as C:../../../target.txt, whi…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.003 (16.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Isaacs Node-tar — versions < 7.5.11
- Isaacs Tar
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-31802?
- CVE-2026-31802 is a medium-severity vulnerability in Isaacs Node-tar, classified under Path Traversal. CVSS score: 5.5/10. Published 2026-03-10.
- How severe is CVE-2026-31802?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2026-31802 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.