https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-09T20:50:09.500032+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-19773 CVE-2026-19773 — libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability 2026-10-09T20:50:09.504541+00:00

Affected: libwebsockets

libwebsockets HTTP/2 HPACK Path Header Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of libwebsockets. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of HTTP/2 HPACK path header. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-31036.

 https://vulnerability.circl.lu/vuln/usn-8893-1 USN-8893-1 — libwebsockets vulnerabilities 2026-10-09T20:50:09.504724+00:00

Affected: Ubuntu:Pro:16.04:LTS: libwebsockets, Ubuntu:Pro:18.04:LTS: libwebsockets, Ubuntu:Pro:20.04:LTS: libwebsockets, Ubuntu:Pro:22.04:LTS: libwebsockets, Ubuntu:Pro:24.04:LTS: libwebsockets, Ubuntu:Pro:26.04:LTS: libwebsockets

It was discovered that libwebsockets did not properly validate user-supplied data when parsing HTTP/2 HPACK path headers, which could result in a write past the end of an allocated buffer. An attacker could possibly use this issue to execute arbitrary code. (CVE-2026-19773)

It was discovered that libwebsockets did not properly handle CBOR recording in the LECP parser, which could result in a write past the end of an allocated buffer. An attacker could possibly use this issue to cause a crash or execute arbitrary code. (CVE-2026-78161)