Buffer Over-read 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.
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Test your applications- Snyk IDSNYK-UNMANAGED-WOLFSSLWOLFSSL-15990485
- published12 Apr 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
NewCVE-2026-5772 (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 Buffer Over-read in the MatchDomainName function during wildcard hostname validation when the LEFT_MOST_WILDCARD_ONLY flag is active. An attacker can cause a crash by supplying a crafted hostname that exhausts the entire string, resulting in a one-byte stack buffer over-read.