proxygen's QPACK decoder enforced its size limit on a string literal in an encoder-stream instruction only after the entire literal had been received. A remote, unauthenticated HTTP/3 peer could send an insert instruction on the QPACK encoder stream that declares an arbitrarily large literal and then keep sending data, causing the decoder to buffer it without bound for the lifetime of the connection and exhaust memory, leading to denial of service. The issue occurs regardless of the advertised QPACK dynamic table capacity, including when the dynamic table is disabled. This issue affects proxygen versions prior to v2026.11.09.00.
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References
History
Wed, 11 Nov 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | proxygen's QPACK decoder enforced its size limit on a string literal in an encoder-stream instruction only after the entire literal had been received. A remote, unauthenticated HTTP/3 peer could send an insert instruction on the QPACK encoder stream that declares an arbitrarily large literal and then keep sending data, causing the decoder to buffer it without bound for the lifetime of the connection and exhaust memory, leading to denial of service. The issue occurs regardless of the advertised QPACK dynamic table capacity, including when the dynamic table is disabled. This issue affects proxygen versions prior to v2026.11.09.00. | |
| References |
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Status: PUBLISHED
Assigner: Meta
Published:
Updated: 2026-11-11T16:54:58.688Z
Reserved: 2026-10-29T17:01:32.523Z
Link: CVE-2026-119235
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Status : Deferred
Published: 2026-11-11T17:17:16.663
Modified: 2026-11-11T17:17:16.760
Link: CVE-2026-119235
No data.
OpenCVE Enrichment
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Weaknesses
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