CVE-2026-63380 (GCVE-0-2026-63380)
Vulnerability from cvelistv5
Published
2026-08-20 17:52
Modified
2026-08-25 15:11
Severity ?
5.7 (Medium) - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
Summary
Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evws_new_session enters its error path after evhttp_start_ws_ succeeds but bufferevent_enable_locking_ fails. evws_connection_free sees a non-null http_server and unconditionally calls TAILQ_REMOVE even though the session was never inserted into http_server->ws_sessions. A local caller able to induce this allocation or locking failure can crash the process. This issue is fixed in version 2.2.2-alpha.
References
Impacted products
Vendor Product Version
libevent libevent Version: < 2.2.2-alpha
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