{"id":"CLEANSTART-2026-OB67421","summary":"HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a r...","details":"CVE-2026-78663 affects multiple packages. The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler reads the buffered data. See references for individual vulnerability details.","modified":"2026-10-23T00:45:15.859572546Z","published":"2026-10-23T00:37:35.459453Z","upstream":["CVE-2026-78663"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-OB67421.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-78663"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78663"}],"affected":[{"package":{"name":"etcd","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/etcd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.29-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"etcd","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/etcd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.10-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"dex","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/dex"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.45.1-r9"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"grafana-rollout-operator","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grafana-rollout-operator"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.36.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"rabbitmq-cluster-operator","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/rabbitmq-cluster-operator"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.22.4-r2"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"rabbitmq-cluster-operator","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/rabbitmq-cluster-operator"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21.1-r7"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"kyverno","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/kyverno"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.1-r5"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"rabbitmq-cluster-operator","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/rabbitmq-cluster-operator"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.19.2-r8"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"rabbitmq-cluster-operator","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/rabbitmq-cluster-operator"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.20.1-r10"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"argo-cd","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/argo-cd"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.3-r4"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"argo-workflows","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/argo-workflows"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.1.1-r1"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.json"}},{"package":{"name":"mailpit","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/mailpit"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.29.7-r3"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-OB67421.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:H/A:H"}]}