CVE-2026-41509 | THREATINT

Description

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.

PUBLISHED Reserved 2026-04-20 | Published 2026-05-08 | Updated 2026-05-08 | Assigner GitHub_M

MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-121: Stack-based Buffer Overflow

CWE-122: Heap-based Buffer Overflow

Product status

< fc6b7e78cdf789bb5c395a81dc601356f1383da0

affected

References

github.com/...tation/security/advisories/GHSA-w72c-hgx8-p7cv

github.com/...ommit/fc6b7e78cdf789bb5c395a81dc601356f1383da0

cve.org (CVE-2026-41509)

nvd.nist.gov (CVE-2026-41509)

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