{"id":"USN-8233-2","summary":"nghttp2 vulnerability","details":"USN-8233-1 fixed a vulnerability in nghttp2. This update provides the\ncorresponding update for Ubuntu 26.04 LTS.\n\nOriginal advisory details:\n\n Andrew MacPherson discovered that nghttp2 did not properly validate\n internal state when the session termination API was called. A remote\n attacker could possibly use this issue to cause nghttp2 to crash,\n resulting in a denial of service.","modified":"2026-05-20T16:06:19.486146416Z","published":"2026-05-06T19:25:25Z","related":["UBUNTU-CVE-2026-27135"],"upstream":["UBUNTU-CVE-2026-27135"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8233-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-27135"}],"affected":[{"package":{"name":"nghttp2","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/nghttp2?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.68.0-2ubuntu0.1"}]}],"versions":["1.64.0-1.1ubuntu1","1.64.0-1.1ubuntu2","1.68.0-1","1.68.0-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.68.0-2ubuntu0.1","binary_name":"libnghttp2-14"},{"binary_name":"nghttp2","binary_version":"1.68.0-2ubuntu0.1"},{"binary_version":"1.68.0-2ubuntu0.1","binary_name":"nghttp2-client"},{"binary_version":"1.68.0-2ubuntu0.1","binary_name":"nghttp2-proxy"},{"binary_version":"1.68.0-2ubuntu0.1","binary_name":"nghttp2-server"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8233-2.json","cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-27135"}]}}}],"schema_version":"1.7.5"}