{"id":"DEBIAN-CVE-2026-53655","details":"node-tar is a full-featured Tar for Node.js. Prior to 7.5.16, tar (node-tar) applies a PAX extended header's size= record (and other PAX overrides) to the next header entry of any type, including intermediary metadata headers such as a GNU long-name (L) or long-link (K) entry. Per POSIX pax, a PAX extended header (x) describes the next file entry, not the intermediary extension headers that may sit between the x header and the file it annotates. Because node-tar lets the PAX size override the byte length of an intervening L/K/x header, an attacker can desynchronize node-tar's stream cursor relative to every other mainstream tar implementation (GNU tar, libarchive/bsdtar, Python tarfile, and the now-fixed tar-rs / astral-tokio-tar). The result is a tar parser interpretation differential (CWE-436): a single crafted archive yields a different set of members under node-tar than under the reference tar tools. An attacker can use this to hide a member from one parser while it is visible to another, which defeats security tooling whose scanner and extractor disagree on archive contents (e.g. a malware/secret scanner that lists entries with one library while a downstream step extracts with another) This vulnerability is fixed in 7.5.16.","modified":"2026-09-01T16:06:50.497182934Z","published":"2026-06-22T16:16:38.593Z","upstream":["CVE-2026-53655"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-53655"}],"affected":[{"package":{"name":"node-tar","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-tar?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.13+~cs7.0.5-1","6.1.13+~cs7.0.5-1+deb12u1","6.1.13+~cs7.0.5-2","6.1.13+~cs7.0.5-3","6.1.13+~cs7.0.5-4","6.2.1+ds1+~cs6.1.13-1","6.2.1+ds1+~cs6.1.13-10","6.2.1+ds1+~cs6.1.13-11","6.2.1+ds1+~cs6.1.13-2","6.2.1+ds1+~cs6.1.13-3","6.2.1+ds1+~cs6.1.13-4","6.2.1+ds1+~cs6.1.13-5","6.2.1+ds1+~cs6.1.13-6","6.2.1+ds1+~cs6.1.13-7","6.2.1+ds1+~cs6.1.13-8","6.2.1+ds1+~cs6.1.13-9","6.2.1+~cs7.0.8-1","7.5.16+~4.0.1-1","7.5.16+~4.0.1-2","7.5.19+~4.0.1-1","7.5.19+~4.0.1-2","7.5.22+~4.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53655.json"}},{"package":{"name":"node-tar","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-tar?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.1+ds1+~cs6.1.13-1","6.2.1+ds1+~cs6.1.13-10","6.2.1+ds1+~cs6.1.13-11","6.2.1+ds1+~cs6.1.13-2","6.2.1+ds1+~cs6.1.13-3","6.2.1+ds1+~cs6.1.13-4","6.2.1+ds1+~cs6.1.13-5","6.2.1+ds1+~cs6.1.13-6","6.2.1+ds1+~cs6.1.13-7","6.2.1+ds1+~cs6.1.13-8","6.2.1+ds1+~cs6.1.13-9","6.2.1+~cs7.0.8-1","6.2.1+~cs7.0.8-1+deb13u1","7.5.16+~4.0.1-1","7.5.16+~4.0.1-2","7.5.19+~4.0.1-1","7.5.19+~4.0.1-2","7.5.22+~4.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53655.json"}},{"package":{"name":"node-tar","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-tar?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.5.16+~4.0.1-2"}]}],"versions":["6.2.1+ds1+~cs6.1.13-1","6.2.1+ds1+~cs6.1.13-10","6.2.1+ds1+~cs6.1.13-11","6.2.1+ds1+~cs6.1.13-2","6.2.1+ds1+~cs6.1.13-3","6.2.1+ds1+~cs6.1.13-4","6.2.1+ds1+~cs6.1.13-5","6.2.1+ds1+~cs6.1.13-6","6.2.1+ds1+~cs6.1.13-7","6.2.1+ds1+~cs6.1.13-8","6.2.1+ds1+~cs6.1.13-9","6.2.1+~cs7.0.8-1","7.5.16+~4.0.1-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-53655.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"}]}