{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-69202","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-03T16:57:50.124Z","datePublished":"2026-09-15T19:25:13.258Z","dateUpdated":"2026-09-15T19:39:12.966Z"},"containers":{"cna":{"title":"Http4s Ember HTTP/2: unbounded inbound body buffering","problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/http4s/http4s/security/advisories/GHSA-6m4x-pp6q-5jmm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/http4s/http4s/security/advisories/GHSA-6m4x-pp6q-5jmm"},{"name":"https://github.com/http4s/http4s/commit/22d2335975d02dc9fb9fb75cfe002279521d86ac","tags":["x_refsource_MISC"],"url":"https://github.com/http4s/http4s/commit/22d2335975d02dc9fb9fb75cfe002279521d86ac"},{"name":"https://github.com/http4s/http4s/releases/tag/v0.23.35","tags":["x_refsource_MISC"],"url":"https://github.com/http4s/http4s/releases/tag/v0.23.35"},{"name":"https://github.com/http4s/http4s/releases/tag/v1.0.0-M47","tags":["x_refsource_MISC"],"url":"https://github.com/http4s/http4s/releases/tag/v1.0.0-M47"}],"affected":[{"vendor":"http4s","product":"http4s","versions":[{"version":"< 0.23.35","status":"affected"},{"version":">= 1.0.0-M1, < 1.0.0-M47","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-15T19:25:13.258Z"},"descriptions":[{"lang":"en","value":"Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, Ember’s HTTP/2 flow-control window is replenished according to bytes received from the network rather than bytes consumed by the application, while each stream stores DATA in an unbounded channel. A hostile peer can therefore send a body faster than a slow or non-draining application consumes it, retaining payloads in heap on an ember-server or ember-client configured with withHttp2. The patch bounds the per-stream H2Connection body channel so application consumption applies backpressure. This issue is fixed in versions 0.23.35 and 1.0.0-M47."}],"source":{"advisory":"GHSA-6m4x-pp6q-5jmm","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T19:39:06.340199Z","id":"CVE-2026-69202","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-15T19:39:12.966Z"}}]}}