{"id":"CLEANSTART-2026-DB70644","summary":"When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface","details":"CVE-2026-56853 affects multiple packages. When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. See references for individual vulnerability details.","modified":"2026-10-15T01:00:04.010314164Z","published":"2026-10-15T00:41:51.820752Z","upstream":["CVE-2026-56853"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-DB70644.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-56853"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56853"}],"affected":[{"package":{"name":"temporal-server-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/temporal-server-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.31.4-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.json"}},{"package":{"name":"stakater-reloader","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/stakater-reloader"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.17-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.json"}},{"package":{"name":"istio-pilot-discovery","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/istio-pilot-discovery"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29.8-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.json"}},{"package":{"name":"istio-pilot-discovery","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/istio-pilot-discovery"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.json"}},{"package":{"name":"stakater-reloader","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/stakater-reloader"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0-r5"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.json"}},{"package":{"name":"nfs-subdir-external-provisioner","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/nfs-subdir-external-provisioner"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.18-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-DB70644.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:N/I:N/A:H"}]}