{"id":"UBUNTU-CVE-2026-78161","details":"A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.","modified":"2026-09-28T11:30:23.773490746Z","published":"2026-08-24T01:16:00Z","related":["USN-8822-1"],"upstream":["CVE-2026-78161"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-78161"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-78161"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8822-1"}],"affected":[{"package":{"name":"libwebsockets","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/libwebsockets?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.3-1.1ubuntu0.1~esm2"}]}],"versions":["4.3.2-4","4.3.3-1","4.3.3-1.1build1","4.3.3-1.1build2","4.3.3-1.1build3","4.3.3-1.1ubuntu0.1~esm1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"libwebsockets-evlib-ev","binary_version":"4.3.3-1.1ubuntu0.1~esm2"},{"binary_name":"libwebsockets-evlib-glib","binary_version":"4.3.3-1.1ubuntu0.1~esm2"},{"binary_name":"libwebsockets-evlib-uv","binary_version":"4.3.3-1.1ubuntu0.1~esm2"},{"binary_name":"libwebsockets-test-server","binary_version":"4.3.3-1.1ubuntu0.1~esm2"},{"binary_name":"libwebsockets-test-server-common","binary_version":"4.3.3-1.1ubuntu0.1~esm2"},{"binary_name":"libwebsockets19t64","binary_version":"4.3.3-1.1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78161.json"}},{"package":{"name":"libwebsockets","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/libwebsockets?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.3.5-3ubuntu1.1"}]}],"versions":["4.3.5-1","4.3.5-3","4.3.5-3ubuntu1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libwebsockets-evlib-ev","binary_version":"4.3.5-3ubuntu1.1"},{"binary_name":"libwebsockets-evlib-glib","binary_version":"4.3.5-3ubuntu1.1"},{"binary_name":"libwebsockets-evlib-uv","binary_version":"4.3.5-3ubuntu1.1"},{"binary_name":"libwebsockets-test-server","binary_version":"4.3.5-3ubuntu1.1"},{"binary_name":"libwebsockets-test-server-common","binary_version":"4.3.5-3ubuntu1.1"},{"binary_name":"libwebsockets19t64","binary_version":"4.3.5-3ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78161.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}]}