High severity8.1NVD Advisory· Published Apr 10, 2026· Updated Apr 29, 2026
CVE-2026-5466
CVE-2026-5466
Description
wolfSSL's ECCSI signature verifier wc_VerifyEccsiHash decodes the r and s scalars from the signature blob via mp_read_unsigned_bin with no check that they lie in [1, q-1]. A crafted forged signature could verify against any message for any identity, using only publicly-known constants.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- github.com/wolfssl/wolfssl/pull/10102nvdIssue Tracking
News mentions
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