CVE-2026-2681

The CVE-2026-2681 entry concerns the blst cryptographic library. The vulnerability is an out-of-bounds stack write in the blst_sha256_bcopy assembly routine caused by a missing zero-length guard. A remote attacker could exploit this by supplying a zero-length salt to key generation functions (e.g...

CVE-2026-2681 Github.com/supranational/blst: blst cryptographic library: denial of service via out-of-bounds stack write in key generation

A flaw was found in the blst cryptographic library. This out-of-bounds stack write vulnerability, specifically in the blstsha256bcopy assembly routine, occurs due to a missing zero-length guard. A remote attacker can exploit this by providing a zero-length salt parameter to key generation...