The vulnerability of the evhttp_find_header() function in the evhttp HTTP parser library from the asynchronous event notification library Libevent allows a attacker to cause a service failure.

The vulnerability of the evhttpfindheader function in the evhttp HTTP parser from the Libevent asynchronous event handling library is related to deficiencies in HTTP request processing. Exploiting this vulnerability could allow a malicious actor to cause service failures...

CVE-2026-63382

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, the libevent evhttp parser in http.c inconsistently handles duplicate Transfer-Encoding headers, comma-separated Transfer-Encoding values, and bare line feeds in chunked framing. evhttpfindheader can select only the first...