CVE-2026-5479HIGH 8.1EPSS p4.7%

CVE-2026-5479CVE-2026-5479

Description

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 caller. When an application uses the EVP API to perform ChaCha20-Poly1305 decryption, the implementation computes or accepts the tag but does not compare it against the expected value.

Scoring

CVSS 3.18.1 (HIGH)
VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS0.15% probability of exploitation · percentile 4.7% · 2026-06-18T12:00:27Z
Published2026-04-10
Last modified2026-04-29

Underlying weaknesses· 1

CWE-354

References

  1. https://github.com/wolfSSL/wolfssl/pull/10102

1

TypeTargetConfidenceTier
WeaknessImproper Validation of Integrity Check Valuecwe-3540%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.