CVE-2026-73566 node-tar: Uncontrolled recursion in mapHas/filesFilter allows uncatchable stack-overflow DoS via crafted long-path tar with member selection

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...

Uncontrolled Recursion

Overview org.webjars.npm:tar is a full-featured Tar for Node.js. Affected versions of this package are vulnerable to Uncontrolled Recursion in the mapHas helper and filesFilter function in src/list.ts, which walk an entry path upward with one path.dirname call per recursion and no segment cap. An...

node-tar: Uncontrolled recursion in mapHas/filesFilter allows uncatchable stack-overflow DoS via crafted long-path tar with member selection

Summary node-tar npm tar contains an uncontrolled-recursion stack-exhaustion DoS in the internal mapHas helper used by filesFilter. When a consumer calls tar.t... or tar.x... with a non-empty member-selection list, node-tar installs a filter that closes over the recursive mapHas src/list.ts:33-44...