Oracle Linux 9 : libevent (ELSA-2026-67910)

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-67910 advisory. - CVE-2026-63383 - CVE-2026-63384 - CVE-2026-63388 - CVE-2026-63387 - CVE-2026-63379 - CVE-2026-63381 - CVE-2026-63382 Tenable has extracted the...

RockyLinux 10 : libevent (RLSA-2026:67909)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67909 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

MiracleLinux 8 : libevent-2.1.8-11.el8_10 (AXSA:2026-1863:01)

The remote MiracleLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2026-1863:01 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial o...

RockyLinux 8 : libevent (RLSA-2026:67908)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67908 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

AlmaLinux 9 : libevent (ALSA-2026:67910)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67910 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

AlmaLinux 8 : libevent (ALSA-2026:67908)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67908 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

RockyLinux 9 : libevent (RLSA-2026:67910)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67910 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

AlmaLinux 10 : libevent (ALSA-2026:67909)

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67909 advisory. libevent: Libevent: Denial of Service via malformed RPC data CVE-2026-63383 libevent: Libevent: Off-by-one stack buffer overflow leading to denial of...

libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling

A flaw was found in Libevent. A heap out-of-bounds write vulnerability in the buffereventsocketsetconnaddress function allows an unauthenticated local peer to achieve arbitrary code execution. By connecting to an AFUNIX listener, an attacker can overwrite critical heap data, leading to memory...

libevent: Libevent: HTTP header handling bugs create risk of access control bypass.

A flaw was found in libevent. The evhttpdecodeuriinternal function in http.c decodes percent-encoded %00 bytes into literal NUL characters without rejecting them, allowing an attacker to craft a URI such as /admin/secret%00.jpg where extension-based access checks see .jpg but the server processes...

libevent: Libevent: Denial of Service via malformed RPC data

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...

libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header`

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...

Important: Red Hat Security Advisory: libevent security update

An update for libevent is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...

libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning

A flaw was found in Libevent, an event notification library. An unauthenticated remote attacker can exploit a vulnerability where chunked HTTP Hypertext Transfer Protocol trailers are incorrectly merged into request headers. This allows the attacker to place security-sensitive fields in trailers,...

libevent: libevent: Multiple HTTP Parser Bugs Enable Request Smuggling

A flaw was found in libevent. The evhttp parser in libevent's http.c component inconsistently handles HTTP Transfer-Encoding headers and chunked framing. This inconsistency allows an unauthenticated remote attacker to desynchronize request boundaries when libevent is used behind a proxy. Successf...

libevent: Libevent: Memory corruption due to use-after-free

A flaw was found in Libevent, an event notification library. A use-after-free vulnerability exists in the evbufferaddbufferreference function when it processes an output buffer with a zero length. This can lead to a dangling pointer, which an attacker could exploit to cause memory corruption or...

libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption

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...

libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling

A flaw was found in Libevent. A heap out-of-bounds write vulnerability in the buffereventsocketsetconnaddress function allows an unauthenticated local peer to achieve arbitrary code execution. By connecting to an AFUNIX listener, an attacker can overwrite critical heap data, leading to memory...

libevent: Libevent: HTTP header handling bugs create risk of access control bypass.

A flaw was found in libevent. The evhttpdecodeuriinternal function in http.c decodes percent-encoded %00 bytes into literal NUL characters without rejecting them, allowing an attacker to craft a URI such as /admin/secret%00.jpg where extension-based access checks see .jpg but the server processes...

libevent: Libevent: Denial of Service via malformed RPC data

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...