CVE-2026-24850
- Source
- https://cve.org/CVERecord?id=CVE-2026-24850
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-24850.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-24850
- Aliases
- Published
- 2026-01-28T00:24:53Z
- Modified
- 2026-08-12T03:51:37Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
- Summary
- ML-DSA Signature Verification Accepts Signatures with Repeated Hint Indices
- Details
-
The ML-DSA crate is a Rust implementation of the Module-Lattice-Based Digital Signature Standard (ML-DSA). Starting in version 0.0.4 and prior to version 0.1.0-rc.4, the ML-DSA signature verification implementation in the RustCrypto
ml-dsacrate incorrectly accepts signatures with repeated (duplicate) hint indices. According to the ML-DSA specification (FIPS 204 / RFC 9881), hint indices within each polynomial must be strictly increasing. The current implementation uses a non-strict monotonic check (<=instead of<), allowing duplicate indices. This is a regression bug. The original implementation was correct, but a commit in version 0.0.4 inadvertently changed the strict<comparison to<=, introducing the vulnerability. Version 0.1.0-rc.4 fixes the issue. - Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-347" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24850.json" }- References
-
- https://csrc.nist.gov/pubs/fips/204/final
- https://datatracker.ietf.org/doc/html/rfc9881
- https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_44_verify_test.json
- https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_65_verify_test.json
- https://github.com/C2SP/wycheproof/blob/master/testvectors_v1/mldsa_87_verify_test.json
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24850.json
- https://github.com/RustCrypto/signatures/security/advisories/GHSA-5x2r-hc65-25f9
- https://nvd.nist.gov/vuln/detail/CVE-2026-24850
- https://github.com/RustCrypto/signatures/issues/894
- https://github.com/RustCrypto/signatures/commit/400961412be2e2ab787942cf30e0a9b66b37a54a
- https://github.com/RustCrypto/signatures/commit/b01c3b73dd08d0094e089aa234f78b6089ec1f38
- https://github.com/RustCrypto/signatures/pull/895
- https://github.com/C2SP/wycheproof