{"id":"GHSA-pv9v-5j35-xwcr","aliases":["RUSTSEC-2026-0073"],"url":"https://o3.security/vulnerability/GHSA-pv9v-5j35-xwcr","summary":"libcrux Panics During Standalone MAC Operations","details":"An incorrect constant for the key length in libcrux-poly1305 caused the standalone MAC function `libcrux_poly1305::mac` to always panic with an out-of-bounds memory access.\n\n## Impact\nApplications wishing to use libcrux-poly1305 as a standalone MAC would experience panics. The use of libcrux-poly1305 in libcrux-chacha20poly1305 is unaffected.\n\n## Mitigation\nStarting from version `0.0.5`, the correct value is used for the key length constant.","published":"2026-03-26T18:00:05Z","modified":"2026-03-27T06:11:21.406889Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"libcrux-poly1305","fixedVersion":"0.0.5"}],"fix":{"url":"https://github.com/cryspen/libcrux/pull/1351","label":"cryspen/libcrux#1351"},"references":[{"type":"WEB","url":"https://github.com/cryspen/libcrux/pull/1351"},{"type":"PACKAGE","url":"https://github.com/cryspen/libcrux"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0073.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-27T06:11:21.406889Z"}}