BaseFortify

Publication date: 2025-12-02

Last updated on: 2025-12-04

Assigner: Facebook, Inc.

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-12-02

Last Modified

2025-12-04

Generated

2026-07-06

AI Q&A

2025-12-03

EPSS Evaluated

2026-07-05

NVD

CVE-2025-55181

Affected Vendors & Products

Vendor	Product	Version / Range
facebook	proxygen	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-834	The product performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.

Attack-Flow Graph

Executive Summary

This vulnerability occurs when an HTTP request or response body larger than 2^31 bytes is sent, causing an infinite loop in the proxygen::coro::HTTPQuicCoroSession component. This loop blocks the event loop and continuously appends data to a vector, leading to unbounded memory growth and eventually causing the process to run out of memory.

Impact Analysis

The vulnerability can cause the affected process to consume excessive memory until it runs out of memory, potentially leading to denial of service by crashing or severely degrading the performance of the application handling HTTP requests or responses.

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