Advisory severityUnratedApache Software Foundation Updated

Advisory [CVE-2026-61902] 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

This security Apache Software Foundation advisory covers CVE-2026-61902; related products: Apache bRPC.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-61902 Source published Oct 21, 2026Source updated Oct 21, 2026

VulniPulse record published Oct 21, 2026Record updated Oct 21, 2026

CVE-2026-61902

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Summary

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.

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.

Affected versions

Apache bRPC before 1.18.0

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Fixed versions

1.18.0

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Mitigation checklist

Recommended fix / mitigation

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.

Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source

Sources

Official and corroborating records used to build this advisory.

Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Apache Software Foundation
CVE.org CNA recordCVE.org
Independent CNA record used for near-real-time discovery and missed-CVE reconciliation. Discovered from the machine-readable feed https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/delta.json; this link opens the CVE.org record for CVE-2026-61902 instead of the raw feed document.
CVE Program

Cross-references

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CVE-2026-61902NVD CVE.org MITRE

Official resources

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