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Threatist priority CRITICAL 0 HIGH 0 MEDIUM 0 LOW 2

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

Fix status Fixed 2 Partial 0 Will not fix 0 Deferred 0 No fix listed 0

Impact type Code execution 0 Privilege escalation 0 Security bypass 1 Information disclosure 0 Tampering 0 Denial of service 0 Spoofing 0 Cross-site scripting 0 SQL injection 0

Attack vector Network 0 Adjacent network 2 Local 0 Physical 0

Requirements No authentication 2 No user interaction 2

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Weakness (CWE) CWE-347 Improper Verification of Cryptographic Signature 1 CWE-354 Improper Validation of Integrity Check Value 1

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Release: wolfSSL 5.9.1 × Clear all filters

TI-2026-04787 CVE-2026-5466 · GHSA-47qf-hp3h-rwmm

wc_VerifyEccsiHash missing sanity check

Priority LOW 35

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]`.

CVSS 4.0HIGH 7.6· Adjacent network · No auth · No interaction · EPSS 0.00197 · Published 2026-04-10 · Fixed in 5.9.1 CWE-347

TI-2026-04800 CVE-2026-5479 · GHSA-3xr8-r75g-g9c6

wolfSSL EVP ChaCha20-Poly1305 AEAD authentication tag

Priority LOW 35

In wolfSSL's EVP layer, the ChaCha20-Poly1305 AEAD decryption path in wolfSSL_EVP_CipherFinal (and related EVP cipher finalization functions) fails to verify the authentication tag before returning plaintext to the calle…

CVSS 4.0HIGH 7.6· Adjacent network · No auth · No interaction · EPSS 0.00205 · Published 2026-04-10 · Fixed in 5.9.1 CWE-354

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