Improper Validation of Integrity Check Value Affecting wolfssl/wolfssl package, versions [,5.9.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-WOLFSSLWOLFSSL-15990741
- published12 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
NewCVE-2026-5479 (opens in a new tab)How to fix?
Upgrade wolfssl/wolfssl to version 5.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the wolfSSL_EVP_CipherFinal process. An attacker can obtain unauthorized access to plaintext data by submitting ciphertext with a forged or incorrect authentication tag, as the tag is not properly verified before decryption output is returned.