proxygen's HTTP/3 codec buffered an incomplete non-DATA frame, such as a control-stream frame, a frame of an unknown or reserved type, or a HEADERS frame, until its entire declared length had arrived, without limiting that length, and re-scanned all buffered data each time more bytes arrived. A remote, unauthenticated HTTP/3 peer could declare a very large frame and deliver it slowly, causing unbounded memory growth and CPU usage that grows quadratically with the number of fragments, leading to denial of service. This issue affects proxygen versions prior to v2026.11.09.00.
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Affected Vendors & Products
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Advisories
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Fixes
Solution
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Workaround
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References
History
Wed, 11 Nov 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | proxygen's HTTP/3 codec buffered an incomplete non-DATA frame, such as a control-stream frame, a frame of an unknown or reserved type, or a HEADERS frame, until its entire declared length had arrived, without limiting that length, and re-scanned all buffered data each time more bytes arrived. A remote, unauthenticated HTTP/3 peer could declare a very large frame and deliver it slowly, causing unbounded memory growth and CPU usage that grows quadratically with the number of fragments, leading to denial of service. This issue affects proxygen versions prior to v2026.11.09.00. | |
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MITRE
Status: PUBLISHED
Assigner: Meta
Published:
Updated: 2026-11-11T16:54:35.006Z
Reserved: 2026-10-29T17:01:32.523Z
Link: CVE-2026-119233
Vulnrichment
No data.
NVD
Status : Deferred
Published: 2026-11-11T17:17:16.390
Modified: 2026-11-11T17:17:16.507
Link: CVE-2026-119233
Redhat
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OpenCVE Enrichment
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Weaknesses
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