CVE-2026-5466

wolfSSL's ECCSI signature verifier wcVerifyEccsiHash decodes the r and s scalars from the signature blob via mpreadunsignedbin 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...

CVE-2026-5466

CVE-2026-5466 affects wolfSSL’s ECCSI verifier wc_VerifyEccsiHash, which decodes r and s without validating they lie in [1, q-1]. This could allow forging a signature to verify against any message for any identity using publicly-known constants. Connected docs confirm the root cause: missing sani...

PT-2026-31862

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description The ECCSI signature verifier wc VerifyEccsiHash in wolfSSL decodes the r and s scalars from the signature blob using mp read unsigned bin without verifying that these values fall within the...