FKIE_CVE-2026-49436

Vulnerability from fkie_nvd - Published: 2026-08-20 22:17 - Updated: 2026-10-18 20:10
Severity
7.3 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N
Summary
LinkAce is a self-hosted archive to collect website links. Prior to version 2.5.7, the Bulk Link API endpoint (`POST /api/v2/bulk/links`) accepts URLs without any format validation, allowing an authenticated user to store a `javascript:` URI. The stored URI is later rendered verbatim as an `href` in Blade templates, and clicking it executes arbitrary JavaScript in the victim's browser — exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue.
References
security-advisories@github.comhttps://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae
security-advisories@github.comhttps://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "LinkAce",
          "vendor": "Kovah",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.5.7"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "LinkAce is a self-hosted archive to collect website links. Prior to version 2.5.7, the Bulk Link API endpoint (`POST /api/v2/bulk/links`) accepts URLs without any format validation, allowing an authenticated user to store a `javascript:` URI. The stored URI is later rendered verbatim as an `href` in Blade templates, and clicking it executes arbitrary JavaScript in the victim\u0027s browser \u2014 exfiltrating cookies and session tokens. Version 2.5.7 fixes the issue."
    },
    {
      "lang": "es",
      "value": "LinkAce es un archivo autoalojado para recopilar enlaces de sitios web. Antes de la versi\u00f3n 2.5.7, el endpoint de la API de enlaces masivos (POST /api/v2/bulk/links) acepta URLs sin ninguna validaci\u00f3n de formato, permitiendo a un usuario autenticado almacenar una URI javascript:. La URI almacenada se renderiza posteriormente de forma literal como un href en las plantillas Blade, y al hacer clic en ella se ejecuta JavaScript arbitrario en el navegador de la v\u00edctima - exfiltrando cookies y tokens de sesi\u00f3n. La versi\u00f3n 2.5.7 corrige el problema."
    }
  ],
  "id": "CVE-2026-49436",
  "lastModified": "2026-10-18T20:10:00.110",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49436",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-21T15:46:45.676388Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-20T22:17:20.240",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Kovah/LinkAce/commit/642ac520347205a8277668bcae269bdc21223eae"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/Kovah/LinkAce/security/advisories/GHSA-6r73-pchm-4m39"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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