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Vulnerability DatabaseCVE-2026-5466

CVE-2026-5466: 
wolfSSL vulnerability analysis and mitigation

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.

Source: NVD

Related wolfSSL vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-5500HIGH8.7
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5501HIGH8.6
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5477HIGH8.2
  • wolfSSLwolfSSL
  • wolfssl
NoNoApr 10, 2026
CVE-2026-5479HIGH7.6
  • wolfSSLwolfSSL
  • wolfssl
NoYesApr 10, 2026
CVE-2026-5466HIGH7.6
  • wolfSSLwolfSSL
  • cpe:2.3:a:wolfssl:wolfssl
NoYesApr 10, 2026

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