CROSS-signature vulnerabilities
Published CVEs affecting CROSS-signature products: 1 record(s), with severity, exploitation and fixes.
CVE-2026-41509
Critical · 9.8
CWE-121 May 8, 2026
Integer underflow in crypto_sign_open() leads to buffer overflow
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.