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.
References (1)
Scores
CVSS v3
8.1
EPSS
0.0000
EPSS Percentile
0.1%
Attack Vector
ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-354
Status
published
Products (2)
wolfSSL/wolfSSL
< 5.9.1
wolfssl/wolfssl
< 5.9.1
Published
Apr 10, 2026
Tracked Since
Apr 10, 2026