{"cve":"CVE-2025-4366","nvd":{"published":"2025-05-22T16:15:55.180","modified":"2026-06-17T09:33:07.383","status":"Analyzed","description":"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.\n\nFixed in:  https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff \n\nImpact: 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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N","score":7.4},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-444"],"references":["https://github.com/cloudflare/pingora"],"products":["cloudflare:pingora"],"source":"nvd","synced_at":"2026-10-19T22:01:57.636215869+00:00"},"epss":{"cve":"CVE-2025-4366","score":0.00536,"percentile":0.45223,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-93c7-7xqw-w357","url":"https://osv.dev/vulnerability/GHSA-93c7-7xqw-w357","summary":"Pingora has a Request Smuggling Vulnerability","modified":"2025-06-20T18:42:06.854880Z","packages":[{"ecosystem":"crates.io","name":"pingora-core","purl":"pkg:cargo/pingora-core","ranges":["<0.5.0"],"fixed":["0.5.0"]}]},{"id":"RUSTSEC-2025-0037","url":"https://osv.dev/vulnerability/RUSTSEC-2025-0037","summary":"Pingora Request Smuggling and Cache Poisoning","modified":"2025-10-28T06:02:18Z","packages":[{"ecosystem":"crates.io","name":"pingora-core","purl":"pkg:cargo/pingora-core","ranges":[">=0.0.0-0 <0.5.0"],"fixed":["0.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}