CVE-2025-55181

Published Dec 2, 2025 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:facebook:proxygen:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Facebook
Facebook proxygen
Vendors & Products Facebook
Facebook proxygen
Type Values Removed Values Added
Weaknesses CWE-834
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Meta
Published
Updated
Dec 3, 2025, 12:33 AM
Reserved
Aug 8, 2025, 6:21 PM
Status
Analyzed
Published
Dec 2, 2025, 10:16 PM
Modified
Oct 18, 2026, 5:10 PM