VulnerabilityAnalyzed
CVE-2026-59874
node-tar is a tar archive manipulation library for Node.js.
HIGH 8.7EPSS 0.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, tar.replace accepts a checksum-valid tar header with a negative base-256 encoded entry size, causing the archive scanner to make no progress while repeatedly parsing the same header. This issue is fixed in version 7.5.18.
- CVSS 4.0
- 8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.43% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- isaacs/tar
- Source
- security-advisories@github.com
References
- https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5Patch
- https://github.com/isaacs/node-tar/releases/tag/v7.5.18Release Notes
- https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5wExploit, Vendor Advisory
- https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5wExploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.