CVE-2026-5772
Medium · 5.3CVSS
5.3
EPSS
0.3%
Published
Apr 9, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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