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Vulnerability record · CVE-2026-73566 · published 13 August 2026

CVE-2026-73566: Uncontrolled resource consumption vulnerability

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.21, node-tar's filesFilter in src/list.ts uses the recursive mapHas helper to walk an archive entry path upward with path.dirname() and no segment cap when tar.t(...) or tar.x(...) receives a non-empty member-selection list. A crafted GNU L or PAX x long-path header with thousands of slash-separated segments reaches this.filter(entry.path, entry) in Parser[CONSUMEHEADER] in src/parse.ts before Unpack[CHECKPATH] applies maxDepth, causing an uncatchable RangeError stack overflow that terminates asynchronous and streaming Node.js consumers. This issue is fixed in version 7.5.21.

7.5 CVSS 3.1 High EPSS 0.53% · top 57.6% CWE-400 · Uncontrolled resource consumptionCWE-674 · CWE-674 Deferred
7.5CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
16 Sep 2026Last modified by NVD

Description

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.21, node-tar's filesFilter in src/list.ts uses the recursive mapHas helper to walk an archive entry path upward with path.dirname() and no segment cap when tar.t(...) or tar.x(...) receives a non-empty member-selection list. A crafted GNU L or PAX x long-path header with thousands of slash-separated segments reaches this.filter(entry.path, entry) in Parser[CONSUMEHEADER] in src/parse.ts before Unpack[CHECKPATH] applies maxDepth, causing an uncatchable RangeError stack overflow that terminates asynchronous and streaming Node.js consumers. This issue is fixed in version 7.5.21.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

LinkTags
https://github.com/isaacs/node-tar/commit/631ae59121bf8fc8a22bbae35f074cb9b789cd4a
https://github.com/isaacs/node-tar/security/advisories/GHSA-r292-9mhp-454m
https://github.com/isaacs/node-tar/security/advisories/GHSA-r292-9mhp-454m

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Source: NIST National Vulnerability Database (record CVE-2026-73566), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.