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VULNERABILITIES

CVE-2026-41509 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/CROSS-signature/CROSS-implementation/commit/fc6b7e78cdf789bb5c395a81dc601356f1383da0 [email protected]Patch
https://github.com/CROSS-signature/CROSS-implementation/security/advisories/GHSA-w72c-hgx8-p7cv [email protected]Vendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-121Stack-based Buffer Overflow[email protected]
CWE-122Heap-based Buffer Overflow[email protected]

Affected Products

ProductVersions
cross-crypto cross-implementation
< 2026-03-23

CPE

  • cpe:2.3:a:cross-crypto:cross-implementation:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-41509
NVD Published Date:
May 8, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-41509 Details - Not Deferred