CVE-2026-63387

A flaw was found in Libevent, an event notification library. An off-by-one stack buffer overflow exists in the dnsnametolabels function when processing a name-bearing DNS record. A remote attacker could send a specially crafted DNS server response, which may lead to a crash or corruption of the...

CVE-2026-63495

A flaw was found in Libevent. An unauthenticated remote client can exploit this vulnerability by repeatedly sending fragmented WebSocket frames to the Libevent WebSocket server. Due to a lack of a total message-size limit, these fragmented frames accumulate in memory without bound, leading to...

CVE-2026-63384

A flaw was found in Libevent. An incorrect integer conversion in the evtagunmarshalheader function allows a remote attacker to provide a specially crafted payload length. This can lead to a wrapped large allocation request, resulting in a denial of service DoS for the affected system. Mitigation...

CVE-2026-63383

A flaw was found in Libevent, an event notification library. A remote attacker could exploit an out-of-bounds read vulnerability in the decodetaginternal function by sending specially crafted, attacker-controlled tagged RPC Remote Procedure Call data. This could lead to a denial of service, causi...

evhttp HTTP parser Heap Buffer Overflow DoS

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...

Libevent Heap Buffer Overflow DoS

The vulnerability of the evtagunmarshalheader function in the Libevent asynchronous event notification library is related to integer overflow. Exploiting this vulnerability could allow a malicious actor to cause service failures...

Libevent Heap Buffer Overflow DoS

The vulnerability of the decodetaginternal function in the Libevent asynchronous event notification library is related to reading data beyond the allowed range of memory. Exploiting this vulnerability could allow a malicious actor to cause service failures...

Libevent Buffer Overflow DoS

The vulnerability of the buffereventsocketsetconnaddress function in the Libevent asynchronous event library is related to writing beyond the buffer’s boundaries. Exploiting this vulnerability could allow an attacker to cause a service failure...

Libevent Heap Buffer Overflow DoS

The vulnerability of the evbufferaddbufferreference function in the Libevent event-driven library is related to the use of uninitialized resources. Exploiting this vulnerability could allow an attacker to cause a service failure...

Libevent Heap Buffer Overflow DoS

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

Libevent DNS Name Buffer Overflow DoS

The vulnerability of the dnsnametolabels function in the Libevent asynchronous event notification library is related to the occurrence of operations outside the buffer in memory. Exploiting this vulnerability could allow a malicious actor to cause service failures...

Libevent Heap Buffer Overflow DoS

The vulnerability of the evwsnewsession function in the Libevent asynchronous event notification library is related to the possibility of using memory after it is freed. Exploiting this vulnerability could allow a attacker to cause a service failure...

Libevent WebSocket DoS

The vulnerability of the ws.c file of the WebSocket server in the Libevent library-related event notification asynchronous library is related to an uncontrolled resource consumption. Exploiting this vulnerability could allow a malicious actor to cause service failures...

SUSE CVE-2026-63379

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

SUSE CVE-2026-63380

Libevent is an event notification library. Prior to 2.2.2-alpha, libevent can dereference invalid list pointers in ws.c when evwsnewsession enters its error path after evhttpstartws succeeds but buffereventenablelocking fails. evwsconnectionfree sees a non-null httpserver and unconditionally call...

SUSE CVE-2026-63381

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a use-after-free in buffer.c when evbufferaddbufferreference processes an output buffer whose outtotallen is zero. evbufferfreeallchains frees the initial empty chain without resetting outbuf-first,...

SUSE 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...

SUSE CVE-2026-63383

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent can read beyond a contiguous evbuffer region in eventtagging.c when decodetaginternal requests at most five bytes from evbufferpullup but iterates using the full logical buffer length. A fragmented evbuffer...

SUSE CVE-2026-63384

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has an incorrect integer conversion in eventtagging.c when evtagunmarshalheader uses evtagdecodeint to decode an attacker-controlled uint32 payload length and returns it as a signed int. Values above INTMAX becom...

SUSE CVE-2026-63385

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has two HTTP parsing weaknesses in http.c. evhttpdecodeuriinternal decodes percent-encoded %00 bytes into literal NUL characters, which can cause downstream C string operations to truncate a path and bypass...