{"id":"CLEANSTART-2026-ZA31794","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":"2026-10-31T06:15:27.995001565Z","published":"2026-10-30T15:34:06.309754Z","upstream":["CVE-2026-56853"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-ZA31794.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":"kubernetes-csi-external-provisioner-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/kubernetes-csi-external-provisioner-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.2.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"opentelemetry-collector-contrib-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/opentelemetry-collector-contrib-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.159.0-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"prometheus-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/prometheus-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.11.3-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"prometheus-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/prometheus-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.12.0-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fulcio-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fulcio-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fulcio-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fulcio-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.1-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fulcio-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fulcio-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.6-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fluent-operator-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fluent-operator-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.10.0-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fulcio-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fulcio-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"fulcio-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/fulcio-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.7.1-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"local-path-provisioner-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/local-path-provisioner-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.36-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"local-path-provisioner-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/local-path-provisioner-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.0.36-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-ZA31794.json"}},{"package":{"name":"opentelemetry-collector-contrib-fips","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/opentelemetry-collector-contrib-fips"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.158.0-r1"}]}],"database_specific":{"source":"https://github.com/cleansta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