Live › vulnerability › CVE-2026-61902
Go to dashboardApache bRPC before 1.18.0 does not consistently enforce the configured max_body_size limit when parsing non-progressive HTTP/1 and HTTP/2 requests and memcache and couchbase responses. A remote unauthenticated peer can make the process buffer data beyond that limit, exhausting memory and causing a denial of service.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 21:57 UTC. All times on this page are UTC.
Services built on Apache bRPC before 1.18.0 that accept HTTP/1 or HTTP/2 traffic from untrusted peers, or that talk to memcache or couchbase backends, are exposed. Progressive HTTP reading is handled by bounded buffering and is not the concern here. Teams on 1.18.0 or later, or with no network-reachable bRPC listener, can skip it.
No product ranges from the sources yet.
1.18.0.max_body_size in the server configuration and for non-progressive HTTP reading or memcache/couchbase client use.1.18.0 or later.Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Apache bRPC versions before 1.18.0 do not consistently enforce the configured max_body_size limit in non-progressive HTTP/1 and HTTP/2 parsing and in memcache and couchbase response parsing.
A remote unauthenticated peer can cause an affected process to buffer message data beyond the configured limit, which may lead to memory exhaustion and denial of service. Users should upgrade to 1.18.0 or apply the patch from PR https://github.com/apache/brpc/pull/3382 . The fix rejects oversized buffered HTTP bodies, returns HTTP 413 for HTTP/1 requests, resets oversized HTTP/2 streams, and rejects oversized memcache and couchbase responses from their declared lengths. Progressive HTTP reading remains supported because it uses bounded buffering.
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