VULNERABILITY INTELLIGENCE

CVE-2025-4600

CVSS score7.5 HIGH
EPSS probability0.20%
CISA KEVNot currently listed
Published2025-05-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Description

A request smuggling vulnerability existed in the Google Cloud Classic Application Load Balancer due to improper handling of chunked-encoded HTTP requests. This allowed attackers to craft requests that could be misinterpreted by backend servers. The issue was fixed by disallowing stray data after a chunk, and is no longer exploitable. No action is required as Classic Application Load Balancer service after 2025-04-26 is not vulnerable.

Weakness classification

  • cve-coordination@google.com: CWE-444

Primary references