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High severity8.1NVD Advisory· Published Apr 10, 2026· Updated Apr 29, 2026

CVE-2026-5479

CVE-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.

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Affected products

2
  • WolfSSL/Wolfssl2 versions
    cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*range: <5.9.1
    • (no CPE)

Patches

Vulnerability mechanics

References

1

News mentions

0

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