CVE-2026-119237

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-119237
StatePUBLISHED
AssignerMeta
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-11 17:17:16 UTC
Updated2026-11-11 17:17:17 UTC
DescriptionIn proxygen's HTTP/3 session, when a HEADERS block referenced QPACK dynamic table entries that had not yet been received, header decoding for that stream was paused, but the session continued to read the stream from the QUIC transport. The unread data bypassed the session's ingress buffer limit, returned flow-control credit to the peer, and was re-scanned in full on every read. With QPACK blocked streams enabled (the default), a remote, unauthenticated HTTP/3 peer could send a HEADERS block that references a dynamic table insert it never sends, followed by a continuous stream of data, causing memory growth until the request timed out and CPU usage that grows quadratically, leading to denial of service. This issue affects proxygen versions prior to v2026.11.09.00.

Risk And Classification

Problem Types: Allocation of Resources Without Limits or Throttling (CWE-770)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Facebook Proxygen affected v0.0.0.0 v2026.11.09.00 semver Not specified

References

ReferenceSourceLinkTags
www.facebook.com/security/advisories/cve-2026-119237 [email protected] www.facebook.com
github.com/meta/proxygen/commit/daf245bba7fe1304b9491403fe56f91153299781 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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