PR
Product
proxygen
by Facebook · last CVE Sep 28, 2026
On CISA KEVExploited in the wild
11
CVEs
1
On KEV
9.8
Max CVSS
3
New 30D
Severity mix
Critical 3High 6Medium 2Low 0
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-91095
5.3
0%
Sep 28
In proxygen from v2024.10.28.00 until v2026.09.28.00, the HTTPTransaction::onWebTransportUniStream and HTTPTransaction::onWebTransportBidiStream APIs could return stream handles…
Affected: v2024.10.28.00 before v2026.09.28.00
CVE-2025-55181
5.3
0%
Dec 2
Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro::HTTPQuicCoroSession which blocks the backing event loop and…
Affected: v2025.08.25.00 through v2025.12.01.00
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