What’s Vulnerable › Vulnerabilities

CVE-2023-51771

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-12-25 · updated 2026-06-17
• Weakness: CWE-120

Description

In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.

Affected products

• Starnight Micro Http Server: all versions

References

• https://github.com/starnight/MicroHttpServer/issues/8
• https://github.com/starnight/MicroHttpServer/tree/a8ab029c9a26a4c9f26b9d8a2757b8299aaff120
• https://github.com/starnight/MicroHttpServer/issues/8
• https://github.com/starnight/MicroHttpServer/tree/a8ab029c9a26a4c9f26b9d8a2757b8299aaff120

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