{"id":"CVE-2026-56676","sourceIdentifier":"security-advisories@github.com","published":"2026-07-10T16:16:34.923","lastModified":"2026-07-13T19:17:24.127","vulnStatus":"Deferred","cveTags":[],"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"decolua","product":"9router","versions":[{"version":"< 0.5.2","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","baseScore":7.4,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"LOW"},"exploitabilityScore":3.1,"impactScore":3.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-13T18:11:05.854652Z","id":"CVE-2026-56676","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-367"},{"lang":"en","value":"CWE-918"}]}],"references":[{"url":"https://github.com/decolua/9router/commit/c7d07448c58bec1200741de0b73305b860416b82","source":"security-advisories@github.com"},{"url":"https://github.com/decolua/9router/releases/tag/v0.5.2","source":"security-advisories@github.com"},{"url":"https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx","source":"security-advisories@github.com"},{"url":"https://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}