{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56676", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-22T16:39:01.044Z", "datePublished": "2026-07-10T15:30:49.514Z", "dateUpdated": "2026-07-13T18:11:54.297Z"}, "containers": {"cna": {"title": "9router: Image prefetch DNS rebinding allows SSRF to internal services", "problemTypes": [{"descriptions": [{"cweId": "CWE-367", "lang": "en", "description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-918", "lang": "en", "description": "CWE-918: Server-Side Request Forgery (SSRF)", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L", "version": "3.1"}}], "references": [{"name": "https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx"}, {"name": "https://github.com/decolua/9router/commit/c7d07448c58bec1200741de0b73305b860416b82", "tags": ["x_refsource_MISC"], "url": "https://github.com/decolua/9router/commit/c7d07448c58bec1200741de0b73305b860416b82"}, {"name": "https://github.com/decolua/9router/releases/tag/v0.5.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/decolua/9router/releases/tag/v0.5.2"}], "affected": [{"vendor": "decolua", "product": "9router", "versions": [{"version": "< 0.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-10T15:30:49.514Z"}, "descriptions": [{"lang": "en", "value": "9Router is an AI router & token saver. Prior to 0.5.2, 9router validates image URLs by resolving the host before fetching, but open-sse/translator/concerns/image.js performs the later server-side image fetch with a separate DNS resolution. An authenticated attacker with access to the LLM proxy can use a vision-capable model and an attacker-controlled DNS name that first resolves to a public IP and then rebinds to an internal address, allowing server-side requests to internal-only HTTP services. This issue is fixed in version 0.5.2."}], "source": {"advisory": "GHSA-cmhj-wh2f-9cgx", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-13T18:11:05.854652Z", "id": "CVE-2026-56676", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-13T18:11:54.297Z"}}]}}

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