PT-2026-31863 · Wolfssl · Wolfssl

Published 2026-04-10 · Updated 2026-04-11 · CVE-2026-5479

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions wolfSSL (affected versions not specified)

Description The software fails to verify the authentication tag during ChaCha20-Poly1305 AEAD decryption, potentially returning plaintext to the caller even with an invalid tag. This occurs in the EVP layer, specifically within the wolfSSL EVP CipherFinal function and related EVP cipher finalization functions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-354

Related Identifiers

CVE-2026-5479

Affected Products

Wolfssl

References · 9

• https://cve.org/CVERecord?id=CVE-2026-5479 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-5479 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-5479 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-5479 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-5479 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-5479 · Security Note
• https://github.com/wolfSSL/wolfssl/pull/10102 · Note
• https://twitter.com/CVEnew/status/2042561785824453050 · Twitter Post
• https://twitter.com/CVEarity/status/2042915203713753129 · Twitter Post