Pingora has a Request Smuggling Vulnerability
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 ### 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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-4366US | medium6.1 | — | ||
A request smuggling vulnerability identified within Pingora’s proxying framework, pingora-proxy, allows malicious HTTP requests to be injected via manipulated request bodies on cac… | ||||
references
External citations — patches, advisories, analysis.
- https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingoraWEB
- https://github.com/cloudflare/pingoraPACKAGE
- https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ffWEB
- https://github.com/cloudflare/pingora/security/advisories/GHSA-93c7-7xqw-w357WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-4366ADVISORY
- https://rustsec.org/advisories/RUSTSEC-2025-0037.htmlWEB
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