CVE-2026-5772 Affecting wolfssl package, versions <5.9.1-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (15th percentile)

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  • Snyk IDSNYK-ALPINE323-WOLFSSL-17037465
  • published29 May 2026
  • disclosed9 Apr 2026

Introduced: 9 Apr 2026

CVE-2026-5772  (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.

A 1-byte stack buffer over-read was identified in the MatchDomainName function (src/internal.c) during wildcard hostname validation when the LEFT_MOST_WILDCARD_ONLY flag is active. If a wildcard * exhausts the entire hostname string, the function reads one byte past the buffer without a bounds check, which could cause a crash.

CVSS Base Scores

version 3.1