CVE-2026-41509
criticalCROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm.
Vendor / product: Cross-crypto — cross-implementation
CROSS implementation contains reference and optimized implementations of the CROSS post-quantum signature algorithm. Prior to commit fc6b7e7, there is a buffer overflow in crypto_sign_open() caused by an underflow of the integer mlen. This issue has been patched via commit fc6b7e7.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-08 14:16
Modified: 2026-10-26 19:10
NVD status: Analyzed
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
cross-crypto / cross-implementation <2026-03-23
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/CROSS-signature/CROSS-implementation/commit/fc6b7e78cdf789bb5c395a81dc6... security-advisories@github.com
- https://github.com/CROSS-signature/CROSS-implementation/security/advisories/GHSA-w72c-hgx8... security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗