{"id":"CVE-2026-82210","aliases":[],"cve":{"records":[{"id":"CVE-2026-82210","source":"apache","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-28T08:27:23.061Z","published":"2026-10-21T12:01:31.264Z","modified":"2026-10-30T14:25:54.253Z"}],"publishers":[{"name":"apache","role":"CNA","organizationId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","modified":"2026-10-21T12:01:31.264Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-30T14:25:54.253Z"}],"references":[{"url":"https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb","tags":["vendor-advisory"],"source":"apache"}],"weaknesses":[{"id":"CWE-617","description":"CWE-617 Reachable Assertion","source":"apache"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-30T14:25:32.031437Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Apache bRPC: Remote denial of service (crash) via malformed stream feedback frames","titleSource":"apache","descriptionSource":"apache","description":"Enforceable assertion in the streaming feature of Apache bRPC (version < 1.18.0) on all platforms allows a remote attacker to crash the server process by sending a malformed stream feedback frame.\n\nRoot Cause:\nWhen handling FRAME_TYPE_FEEDBACK frames, bRPC calls Stream::SetRemoteConsumed() which contains CHECK(_cur_buf_size > 0) and unconditionally asserts CHECK(buf.IsEmpty()) on the frame payload. A feedback frame that carries an unexpected payload, or a feedback frame received on a stream where flow control is disabled (cur_buf_size == 0), reaches these assertions. On failure, CHECK failures abort the process, allowing an unauthenticated single client (once a stream is established) to terminate the server and cause a denial of service.\n\nAffected Scenarios:\nUse bRPC server with the streaming control feature (Stream API) served from untrusted network.\n\nHow to Fix:\n1. Upgrade bRPC to version 1.18.0, which fixes this issue.\n2. Apply this patch:  https://github.com/apache/brpc/pull/3494 \n\nThe fix rejects malformed feedback frames with EPROTO and closes only the affected stream instead of crashing the whole process, and it bounds buffer shrinking so cur_buf_size never drops to 0 while flow control is enabled.","score":7.5,"severity":"high","published":"2026-10-21T12:01:31.264Z","modified":"2026-10-30T14:25:54.253Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Apache Software Foundation","name":"Apache bRPC","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"1.18.0","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:github/apache/brpc","cpes":[],"source":"apache","url":"https://www.cve.org/CVERecord?id=CVE-2026-82210"}],"remediation":[],"references":["https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb"],"sources":[{"name":"CVE","id":"CVE-2026-82210","modified":"2026-10-30T14:25:54.253Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-82210"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-30T16:16:49.595Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T11:55:30.958Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":null}