CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer overflow
- State
- Published
- Severity
- 6.9 Medium
- Published
- May 8, 2026
- Updated
- May 8, 2026
- Reserved
- Apr 20, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
CROSS-implementationCROSS-signature |
|
References
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