CVE-2026-53600 async-tar PAX extension-header desync enables tar entry/content smuggling

async-tar is a tar archive reading/writing library for async Rust. Prior to version 0.6.1, async-tar mis-applies a buffered PAX size extension to an intermediary extension header a GNU longname L, a GNU longlink K, or a PAX x/g header instead of to the next file entry. POSIX requires a PAX...

CVE-2026-53600

async-tar (crates.io), a tar archive reading/writing library for async Rust, is vulnerable in versions

Exploit for CVE-2025-62518

Tarmageddon CVE-2025-62518https://nvd.nist.gov/vuln/detail/...