CVE-2025-55181

MEDIUM

proxygen 2025.08.25.00-2025.12.01.00 - Denial of Service via HTTP Request/Response Body

Title source: llm
STIX 2.1

Description

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 unconditionally appends data to a std::vector per-loop iteration. This issue leads to unbounded memory growth and eventually causes the process to run out of memory.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0025
EPSS Percentile 16.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-834
Status published
Products (1)
facebook/proxygen 2025.08.25.00 - 2025.12.01.00
Published Dec 02, 2025
Tracked Since Feb 18, 2026