FKIE_CVE-2026-56676

Vulnerability from fkie_nvd - Published: 2026-07-10 16:16 - Updated: 2026-07-10 17:25
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Summary
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.
References
security-advisories@github.comhttps://github.com/decolua/9router/commit/c7d07448c58bec1200741de0b73305b860416b82
security-advisories@github.comhttps://github.com/decolua/9router/releases/tag/v0.5.2
security-advisories@github.comhttps://github.com/decolua/9router/security/advisories/GHSA-cmhj-wh2f-9cgx
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "9router",
          "vendor": "decolua",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.5.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "9Router is an AI router \u0026 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."
    }
  ],
  "id": "CVE-2026-56676",
  "lastModified": "2026-07-10T17:25:46.957",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 3.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-10T16:16:34.923",
  "references": [
    {
      "source": "security-advisories@github.com",
      "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"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        },
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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