An update for libwebsockets is now available for openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-4076 Final 1.0 1.0 2026-09-25 Initial 2026-09-25 2026-09-25 openEuler SA Tool V1.0 2026-09-25 libwebsockets security update An update for libwebsockets is now available for openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4 Libwebsockets (LWS) is a flexible, lightweight pure C library for implementing modern network protocols easily with a tiny footprint, using a nonblocking event loop. Security Fix(es): 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.(CVE-2026-19773) A vulnerability classified as critical was found in warmcat libwebsockets 4.5.0. The vulnerability is in the function report_raw_cbor in lib/misc/lecp.c when handling LECP CBOR recordings. This issue allows an out-of-bounds write (CWE-787), which could affect confidentiality, integrity, and availability. A proof-of-concept exploit is available.(CVE-2026-78161) An update for libwebsockets is now available for openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High libwebsockets https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4076 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-19773 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-78161 https://nvd.nist.gov/vuln/detail/CVE-2026-19773 https://nvd.nist.gov/vuln/detail/CVE-2026-78161 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 libwebsockets-4.3.3-8.oe2403sp1.aarch64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp1.aarch64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp1.aarch64.rpm libwebsockets-devel-4.3.3-8.oe2403sp1.aarch64.rpm libwebsockets-4.3.3-8.oe2403sp3.aarch64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp3.aarch64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp3.aarch64.rpm libwebsockets-devel-4.3.3-8.oe2403sp3.aarch64.rpm libwebsockets-4.3.3-8.oe2403sp4.aarch64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp4.aarch64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp4.aarch64.rpm libwebsockets-devel-4.3.3-8.oe2403sp4.aarch64.rpm libwebsockets-4.3.0-11.oe2003sp4.aarch64.rpm libwebsockets-debuginfo-4.3.0-11.oe2003sp4.aarch64.rpm libwebsockets-debugsource-4.3.0-11.oe2003sp4.aarch64.rpm libwebsockets-devel-4.3.0-11.oe2003sp4.aarch64.rpm libwebsockets-4.3.0-11.oe2203sp4.aarch64.rpm libwebsockets-debuginfo-4.3.0-11.oe2203sp4.aarch64.rpm libwebsockets-debugsource-4.3.0-11.oe2203sp4.aarch64.rpm libwebsockets-devel-4.3.0-11.oe2203sp4.aarch64.rpm libwebsockets-4.3.3-8.oe2403sp1.src.rpm libwebsockets-4.3.3-8.oe2403sp3.src.rpm libwebsockets-4.3.3-8.oe2403sp4.src.rpm libwebsockets-4.3.0-11.oe2003sp4.src.rpm libwebsockets-4.3.0-11.oe2203sp4.src.rpm libwebsockets-4.3.3-8.oe2403sp1.x86_64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp1.x86_64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp1.x86_64.rpm libwebsockets-devel-4.3.3-8.oe2403sp1.x86_64.rpm libwebsockets-4.3.3-8.oe2403sp3.x86_64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp3.x86_64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp3.x86_64.rpm libwebsockets-devel-4.3.3-8.oe2403sp3.x86_64.rpm libwebsockets-4.3.3-8.oe2403sp4.x86_64.rpm libwebsockets-debuginfo-4.3.3-8.oe2403sp4.x86_64.rpm libwebsockets-debugsource-4.3.3-8.oe2403sp4.x86_64.rpm libwebsockets-devel-4.3.3-8.oe2403sp4.x86_64.rpm libwebsockets-4.3.0-11.oe2003sp4.x86_64.rpm libwebsockets-debuginfo-4.3.0-11.oe2003sp4.x86_64.rpm libwebsockets-debugsource-4.3.0-11.oe2003sp4.x86_64.rpm libwebsockets-devel-4.3.0-11.oe2003sp4.x86_64.rpm libwebsockets-4.3.0-11.oe2203sp4.x86_64.rpm libwebsockets-debuginfo-4.3.0-11.oe2203sp4.x86_64.rpm libwebsockets-debugsource-4.3.0-11.oe2203sp4.x86_64.rpm libwebsockets-devel-4.3.0-11.oe2203sp4.x86_64.rpm libwebsockets-help-4.3.3-8.oe2403sp1.noarch.rpm libwebsockets-help-4.3.3-8.oe2403sp3.noarch.rpm libwebsockets-help-4.3.3-8.oe2403sp4.noarch.rpm libwebsockets-help-4.3.0-11.oe2003sp4.noarch.rpm libwebsockets-help-4.3.0-11.oe2203sp4.noarch.rpm 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. 2026-09-25 CVE-2026-19773 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 High 7.3 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L libwebsockets security update 2026-09-25 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4076 A vulnerability classified as critical was found in warmcat libwebsockets 4.5.0. The vulnerability is in the function report_raw_cbor in lib/misc/lecp.c when handling LECP CBOR recordings. This issue allows an out-of-bounds write (CWE-787), which could affect confidentiality, integrity, and availability. A proof-of-concept exploit is available. 2026-09-25 CVE-2026-78161 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 Medium 5.5 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P libwebsockets security update 2026-09-25 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4076