CVE-2026-5466

N/A

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.

CVE Details

CVSS v3.1 ScoreN/A

Published4/10/2026

Last Modified4/13/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-347

References

https://github.com/wolfssl/wolfssl/pull/10102(facts@wolfssl.com)

IOC Correlations

No correlations recorded

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