MatchDomainName 1-Byte Stack Buffer Over-Read in Hostname Validation_CVE-2026-5772

2.1 / 10

LOW

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Description

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.

Basic Information

ID CVE-2026-5772

Source wolfSSL

Published Apr 9, 2026 at 21:50

Modified Apr 10, 2026 at 13:52

Affected Product

Vendor wolfSSL

Product wolfSSL

Affected Versions wolfSSL wolfSSL 0

CWE Classification

CWE-126

References

github.com /wolfSSL/wolfssl/pull/10119

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    "published": "2026-04-09T21:50:04.038Z",
    "modified": "2026-04-10T13:52:58.722Z",
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