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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-61902

Apache bRPC: Memory Exhaustion Through Inconsistent Message Body LimitsCVE-2026-61902

Answer in brief

CVE-2026-61902 records a Unknown severity vulnerability in Apache bRPC: Memory Exhaustion Through Inconsistent Message Body Limits. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/apache/brpc (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 21, 2026Updated Oct 21, 2026Source checked Oct 21, 2026First seen by HOL Oct 21, 2026Material review Oct 21, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/apache/brpc (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/apache/brpcgeneric>=0 <1.18.01.18.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/apache/brpc.
  2. 2Review the reported fix. Update Apache Software Foundation/apache/brpc to 1.18.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 21, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 21, 2026

Sources and claim methodology

  • Source referencelists.apache.org
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Apache bRPC: Heap Use-After-Free in RTMP Abort Message HandlingSame apache software foundation/apache/brpc package
  • Apache bRPC: Remote Denial of Service via Out-of-Bounds Dynamic Table Sizing in HPACK DecoderSame apache software foundation/apache/brpc package
  • Apache bRPC: Unbounded Resource Consumption and Crash in the HTTP/2 Receive PathSame apache software foundation/apache/brpc package
  • Apache bRPC: Resource Exhaustion via Unbounded Decompression and Unvalidated Wire-Declared SizesSame apache software foundation/apache/brpc package
  • Apache bRPC: Missing Authentication for Streaming RPC FramesSame apache software foundation/apache/brpc package
  • Apache bRPC: Out-of-bounds Read in Multi-stream RPC Response HandlingSame apache software foundation/apache/brpc package

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-400
Source
CVE List V5
Source checked
Oct 21, 2026
References
1 linked source
Open source record