CVE-2026-72552

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{"affected": [{"affectedData": [{"product": "Dub", "vendor": "Dub", "versions": [{"lessThanOrEqual": "2026-07-10", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A server-side request forgery vulnerability in Dub as of 2026-07-10 allows unauthenticated remote attackers to make the server issue HTTP requests to arbitrary internal or external hosts via the metatags edge endpoint. The endpoint fetches any caller-supplied URL without applying a denylist or requiring authentication. An attacker can use this to scan internal services or exfiltrate data from cloud metadata endpoints."}, {"lang": "es", "value": "Una vulnerabilidad de falsificaci\u00f3n de petici\u00f3n del lado del servidor en Dub, con fecha del 10-07-2026, permite a atacantes remotos no autenticados hacer que el servidor emita peticiones HTTP a hosts internos o externos arbitrarios a trav\u00e9s del punto final \u2019metatags edge\u2019. El punto final recupera cualquier URL proporcionada por el solicitante sin aplicar una lista de denegaci\u00f3n ni requerir autenticaci\u00f3n. Un atacante puede usar esto para escanear servicios internos o exfiltrar datos de puntos finales de metadatos en la nube."}], "id": "CVE-2026-72552", "lastModified": "2026-10-24T15:10:00.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-72552", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-11T15:15:24.094728Z", "version": "2.0.3"}}]}, "published": "2026-08-11T12:17:40.860", "references": [{"source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "url": "https://github.com/dubinc/dub"}], "sourceIdentifier": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c", "type": "Secondary"}]}

{"bugzilla": {"description": "dub: Dub: Server-Side Request Forgery allows information disclosure and internal network scanning", "id": "2513873", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2513873"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-918", "details": ["A server-side request forgery vulnerability in Dub as of 2026-07-10 allows unauthenticated remote attackers to make the server issue HTTP requests to arbitrary internal or external hosts via the metatags edge endpoint. The endpoint fetches any caller-supplied URL without applying a denylist or requiring authentication. An attacker can use this to scan internal services or exfiltrate data from cloud metadata endpoints.", "A flaw was found in Dub. This server-side request forgery (SSRF) vulnerability allows an unauthenticated remote attacker to force the server to make HTTP requests to arbitrary internal or external hosts. This can be exploited via the `metatags` edge endpoint, which processes caller-supplied URLs without proper validation or authentication. Successful exploitation could lead to information disclosure, such as scanning internal services or exfiltrating data from cloud metadata endpoints."], "mitigation": {"lang": "en:us", "value": "Restrict outbound network connectivity from the application host to block requests targeting private IP ranges and cloud metadata endpoints (e.g., 169.254.169.254). Alternatively, block external traffic or enforce strict authentication for the `/api/metatags` edge endpoint at the reverse proxy or API gateway level."}, "name": "CVE-2026-72552", "public_date": "2026-08-11T11:10:50Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-72552\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-72552\nhttps://github.com/dubinc/dub"], "statement": "A Server-Side Request Forgery (SSRF) flaw exists in Dub's metatags edge endpoint. An unauthenticated remote attacker can supply arbitrary HTTP/HTTPS URLs to the endpoint, which fetches caller-provided addresses without enforcing IP denylists, domain egress controls, or authentication requirements. Consequently, the server executes arbitrary outbound network requests on behalf of the attacker, enabling internal network port scanning and exposure of local metadata endpoints or internal web services, posing an Important impact to confidentiality.", "threat_severity": "Important"}

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