CVE-2026-23745
node-tar Vulnerable to Arbitrary File Overwrite and Symlink Poisoning via Insufficient Path Sanitization
HIGH 8.2EPSS 0.4%
node-tar is a Tar for Node.js. The node-tar library (<= 7.5.2) fails to sanitize the linkpath of Link (hardlink) and SymbolicLink entries when preservePaths is false (the default secure behavior). This allows malicious archives to bypass the extraction root restriction, leading to Arbitrary File Overwrite via hardlinks and Symlink Poisoning via absolute symlink targets. This vulnerability is fixed in 7.5.3.
- Affected
- isaacs · node-tar
- CVSS v4.0 GITHUB
- 8.2 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 8.2 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N - CVSS v3.1 NVD
- 6.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N - CVSS v3.1 CNA
- 8.2 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - EPSS
- 0.38% chance of exploitation in the next 30 days, 30th percentile
- Published
- 2026-01-16
- Updated
- 2026-09-07
Proof-of-concept exploits (3)
- advisories/GHSA-8qq5-rm4j-mr97
- Jvr2022/CVE-2026-2374523★ · 2026-01-17
- Novem13th/CVE-2026-23745-via-graphql-DEMO0★ · 2026-03-26
Security advisories
- isaacs/node-tar/security/advisories/GHSA-8qq5-rm4j-mr97
- isaacs/node-tar/commit/340eb285b6d986e91969a1170d7fe9b0face405e