PT-2026-56681

Name of the Vulnerable Software and Affected Versions async-tar versions 0.6.0 and earlier Description async-tar mis-applies a buffered PAX size extension to an intermediary extension header such as a GNU longname L, a GNU longlink K, or a PAX x/g header instead of applying it to the subsequent...

CVE-2026-53655 node-tar applies PAX size override to intermediary GNU long-name/long-link headers, causing tar parser interpretation differential (file smuggling)

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 extend...