CVE-2026-5772
Last modified
CVE-2026-5772 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wolfssl | Wolfssl | < 5.9.1 |
References
- https://github.com/wolfSSL/wolfssl/pull/10119Issue Tracking, Patch
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-5772?
How severe is CVE-2026-5772?
How do I fix CVE-2026-5772?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-57714Improper Neutralization of Special Elements used in an SQL C…9.3
- CVE-2026-57715Improper Neutralization of Input During Web Page Generation …7.1
- CVE-2026-57716Unauthenticated Arbitrary File Deletion in Broadcast Live Vi…5.3
- CVE-2026-57717Unauthenticated Broken Access Control in Knit Pay <= 9.6.0.0…6.5
- CVE-2026-57718Improper Neutralization of Input During Web Page Generation …7.1
- CVE-2026-57719Unrestricted Upload of File with Dangerous Type vulnerabilit…10
- CVE-2026-57720Missing Authorization vulnerability in Codexpert Inc ThumbPr…4.3
- CVE-2026-57721Missing Authorization vulnerability in WP Reloaded ApplyOnli…5.3
- CVE-2026-57722Improper Neutralization of Input During Web Page Generation …5.9
- CVE-2026-57723Cross-Site Request Forgery (CSRF) vulnerability in e4jvikwp …7.4
- CVE-2026-57724Deserialization of Untrusted Data vulnerability in Themeum K…9.8
- CVE-2026-57725Improper Neutralization of Input During Web Page Generation …7.1
Are you affected by CVE-2026-5772?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST