{"action":"Upgrade cmov to 0.4.4 or later.","affected":[{"fixed":"0.4.4","introduced":"0"}],"component":"cmov","cve_ids":["CVE-2026-23519"],"ecosystem":"crates.io","epss":0.00558,"exploited":false,"fixed_versions":["0.4.4"],"ghsa_id":"GHSA-2gqc-6j2q-83qp","id":"tcs_01M5KERCJA2NS31ZYWBG729H8A","modified_at":"2026-09-10T03:50:32.352645465Z","published_at":"2026-01-15T18:17:15Z","references":["https://osv.dev/vulnerability/GHSA-2gqc-6j2q-83qp","https://github.com/RustCrypto/utils/security/advisories/GHSA-2gqc-6j2q-83qp","https://nvd.nist.gov/vuln/detail/CVE-2026-23519","https://github.com/RustCrypto/utils/commit/55977257e7c82a309d5e8abfdd380a774f0f9778","https://github.com/RustCrypto/utils","https://rustsec.org/advisories/RUSTSEC-2026-0003.html"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-2gqc-6j2q-83qp","url":"https://osv.dev/vulnerability/GHSA-2gqc-6j2q-83qp"},{"source":"nvd","source_id":"CVE-2026-23519","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-23519"}],"summary":"RustCrypto Utilities cmov: `thumbv6m-none-eabi` compiler emits non-constant time assembly when using `cmovnz`"}