{"id":"CVE-2026-41678","aliases":["GHSA-8c75-8mhr-p7r9"],"url":"https://o3.security/vulnerability/CVE-2026-41678","summary":"rust-openssl: Incorrect bounds assertion in aes key wrap","details":"rust-openssl provides OpenSSL bindings for the Rust programming language.  From  to before 0.10.78, aes::unwrap_key() contains an incorrect assertion: it checks that out.len() + 8 <= in_.len(), but this condition is reversed. The intended invariant is out.len() >= in_.len() - 8, ensuring the output buffer is large enough. Because of the inverted check, the function only accepts buffers at or below the minimum required size and rejects larger ones. If a smaller buffer is provided the function will write past the end of out by in_.len() - 8 - out.len() bytes, causing an out-of-bounds write from a safe public function. This vulnerability is fixed in 0.10.78.","published":"2026-04-24T17:18:27.280Z","modified":"2026-08-07T11:51:04.360270108Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"openssl","fixedVersion":"0.10.78"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41678.json"},{"type":"ADVISORY","url":"https://github.com/rust-openssl/rust-openssl/security/advisories/GHSA-8c75-8mhr-p7r9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41678"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:04.360270108Z"}}