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    "cveMetadata": {
        "cveId": "CVE-2025-4366",
        "assignerOrgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
        "state": "PUBLISHED",
        "assignerShortName": "cloudflare",
        "dateReserved": "2025-05-05T17:42:10.923Z",
        "datePublished": "2025-05-22T15:50:20.789Z",
        "dateUpdated": "2025-06-18T13:46:25.042Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "collectionURL": "https://github.com/cloudflare/pingora",
                    "defaultStatus": "unaffected",
                    "packageName": "Pingora",
                    "repo": "https://github.com/cloudflare/pingora",
                    "versions": [
                        {
                            "lessThan": "0.5.0",
                            "status": "affected",
                            "version": "0",
                            "versionType": "git"
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                    ]
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            ],
            "datePublic": "2025-05-22T15:11:00.000Z",
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
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                            "base64": false,
                            "type": "text/html",
                            "value": "<p><span style=\"background-color: rgb(244, 249, 250);\">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.</span></p><p><span style=\"background-color: transparent;\">Fixed in:</span><span style=\"background-color: transparent;\">&nbsp;</span><a target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff\"><span style=\"background-color: transparent;\">https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff</span></a></p><p><span style=\"background-color: transparent;\">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.</span></p><br><br>"
                        }
                    ],
                    "value": "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."
                }
            ],
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                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "attackVector": "NETWORK",
                        "baseScore": 7.4,
                        "baseSeverity": "HIGH",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "LOW",
                        "subIntegrityImpact": "LOW",
                        "userInteraction": "ACTIVE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "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",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
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                    "format": "CVSS",
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                            "lang": "en",
                            "value": "GENERAL"
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            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-444",
                            "description": "CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a22f1246-ba21-4bb4-a601-ad51614c1513",
                "shortName": "cloudflare",
                "dateUpdated": "2025-05-22T15:50:20.789Z"
            },
            "references": [
                {
                    "url": "https://github.com/cloudflare/pingora"
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "title": "Request Smuggling Vulnerability in Pingora",
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            {
                "metrics": [
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-05-22T18:30:25.819289Z",
                                "id": "CVE-2025-4366",
                                "options": [
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                                        "Exploitation": "none"
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                                        "Automatable": "no"
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                                        "Technical Impact": "partial"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
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