CVE-2026-2645 Affecting wolfssl package, versions <5.9.1-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.02% (7th percentile)

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  • Snyk IDSNYK-ALPINE323-WOLFSSL-17037471
  • published29 May 2026
  • disclosed19 Mar 2026

Introduced: 19 Mar 2026

CVE-2026-2645  (opens in a new tab)

How to fix?

Upgrade Alpine:3.23 wolfssl to version 5.9.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wolfssl package and not the wolfssl package as distributed by Alpine. See How to fix? for Alpine:3.23 relevant fixed versions and status.

In wolfSSL 5.8.2 and earlier, a logic flaw existed in the TLS 1.2 server state machine implementation. The server could incorrectly accept the CertificateVerify message before the ClientKeyExchange message had been received. This issue affects wolfSSL before 5.8.4 (wolfSSL 5.8.2 and earlier is vulnerable, 5.8.4 is not vulnerable). In 5.8.4 wolfSSL would detect the issue later in the handshake. 5.9.0 was further hardened to catch the issue earlier in the handshake.

CVSS Base Scores

version 3.1