Missing Cryptographic Step Affecting 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.
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Test your applications- Snyk IDSNYK-CONAN-WOLFSSL-15762311
- published24 Mar 2026
- disclosed19 Mar 2026
- creditJaehun Lee, Kyungmin Bae
Introduced: 19 Mar 2026
CVE-2026-3230 (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 Missing Cryptographic Step due to missing validation in the key_share process during the TLS 1.3 HelloRetryRequest handshake. An attacker can compromise the confidentiality of encrypted communications by sending a crafted HelloRetryRequest followed by a ServerHello message that omits the required key_share extension, resulting in the derivation of predictable traffic secrets from the (EC)DHE shared secret.