What is CVE-2026-5479?

CVE-2026-5479 is a high-severity vulnerability in Wolfssl, classified under Improper Validation of Integrity Check Value. CVSS score: 8.1/10. Published 2026-04-10.

How severe is CVE-2026-5479?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Wolfssl

CVE-2026-5479

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 applicat…

EPSS: 0.000 (0.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Wolfssl — versions 0

Weakness classification (CWE)

CWE-354 — Improper Validation of Integrity Check Value

References

facts@wolfssl.com (Issue Tracking)

Frequently asked questions

What is CVE-2026-5479?: CVE-2026-5479 is a high-severity vulnerability in Wolfssl, classified under Improper Validation of Integrity Check Value. CVSS score: 8.1/10. Published 2026-04-10.
How severe is CVE-2026-5479?: High severity. CVSS v3 base score is 8.1 out of 10.