Improper Input Validation Affecting wolfssl package, versions [,5.9.1)
Threat Intelligence
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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.
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Test your applications- Snyk IDSNYK-CONAN-WOLFSSL-15990747
- published12 Apr 2026
- disclosed10 Apr 2026
- creditUnknown
Introduced: 10 Apr 2026
CVE-2026-5500 (opens in a new tab)How to fix?
Upgrade wolfssl to version 5.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Input Validation due to improper validation of the AES-GCM authentication tag length in the wc_PKCS7_DecodeAuthEnvelopedData function. An attacker can bypass authentication by truncating the authentication tag, significantly reducing the cryptographic strength of the tag verification process.