CVE-2025-4366

A request smuggling vulnerability identified within Pingora’s proxying framework, pingora-proxy, allows malicious HTTP requests to be injected via manipulated request bodies on cache HITs, leading to unauthorized request execution and potential cache poisoning. Fixed in:  https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff Impact: The issue could lead to request smuggling in cases where Pingora’s proxying framework, pingora-proxy, is used for caching allowing an attacker to manipulate headers and URLs in subsequent requests made on the same HTTP/1.1 connection.

Score

CVSS 4.0 7.4 High

Status

Analyzed - cna@cloudflare.com

Published

2025-05-22

Last modified

2025-06-18

Weaknesses

CWE-444

Affected products

• Pingora (Cloudflare)

References

• https://github.com/cloudflare/pingora