CVE-2025-55181CWE-834

CVE-2025-55181

Medium · published December 3, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
20.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00293 · 20.8th percentile
Weakness
CWE-834 · Excessive Iteration
Published
2025-12-03T03:16Z
Affected products (1)
ProductVersionsFixed in
facebook/proxygen≥ 2025.08.25.00, ≤ 2025.12.01.00—
References (2)
https://github.com/facebook/proxygen/commit/17689399ef99b7c3d3a8b2b768b1dba1a4b72f8f · [email protected]https://www.facebook.com/security/advisories/cve-2025-55181 · [email protected]
EPSS history
Timeline
  • 02 DEC 22:13Z
    Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro::HTTPQuicCoroSession which blocks the backing…
    cvelistv5