CVE-2023-4540

Improper Handling of Exceptional Conditions vulnerability in Daurnimator lua-http library allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop. This issue affects lua-http: all versions before commit ddab283.

• CWE-755
• CWE-755

• https://cert.pl/en/posts/2023/09/CVE-2023-4540/
• https://cert.pl/posts/2023/09/CVE-2023-4540/Patch, Third Party Advisory
• https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6Patch
• https://cert.pl/posts/2023/09/CVE-2023-4540/Patch, Third Party Advisory
• https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6Patch
• https://https://cert.pl/en/posts/2023/09/CVE-2023-4540/

Published

Sep 5, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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