{"cve":"CVE-2026-59874","nvd":{"published":"2026-07-08T16:16:33.990","modified":"2026-10-25T17:10:00.197","status":"Analyzed","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_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-835"],"references":["https://github.com/isaacs/node-tar/commit/9e78bf058b2c22dd4d52e00d8922d5c06fc2f7b5","https://github.com/isaacs/node-tar/releases/tag/v7.5.18","https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w","https://github.com/isaacs/node-tar/security/advisories/GHSA-8x88-c5mf-7j5w"],"products":["isaacs:tar"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-59874","score":0.00434,"percentile":0.37395,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-8x88-c5mf-7j5w","url":"https://osv.dev/vulnerability/GHSA-8x88-c5mf-7j5w","summary":"node-tar: Negative tar entry size causes infinite loop in archive replace","modified":"2026-09-10T03:51:11.200904859Z","packages":[{"ecosystem":"npm","name":"tar","purl":"pkg:npm/tar","ranges":["<7.5.18"],"fixed":["7.5.18"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}