CVE-2026-44658

{
  "id": "CVE-2026-44658",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-11T18:16:38.243",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Zen is a firefox-based browser. Prior to 1.19.12b, RSS feed URLs entered by the user are validated to http: or https: in promptForFeedUrl, but item links inside the feed are not subject to the same restriction. The provider maps each RSS/Atom item link into item.url, filters only for presence and date, and returns the item list. The live-folder manager later creates pinned lazy tabs from these values with gBrowser.addTrustedTab(item.url, ...). This vulnerability is fixed in 1.19.12b."
    },
    {
      "lang": "es",
      "value": "Zen es un navegador basado en Firefox. Antes de la versión 1.19.12b, las URL de feeds RSS introducidas por el usuario se validan para http: o https: en promptForFeedUrl, pero los enlaces de elementos dentro del feed no están sujetos a la misma restricción. El proveedor mapea cada enlace de elemento RSS/Atom a item.url, filtra solo por presencia y fecha, y devuelve la lista de elementos. El gestor de carpetas en vivo más tarde crea pestañas perezosas ancladas a partir de estos valores con gBrowser.addTrustedTab(item.url, ...). Esta vulnerabilidad se corrige en la versión 1.19.12b."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "zen-browser",
          "product": "desktop",
          "versions": [
            {
              "version": "< 1.19.12b",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N",
          "baseScore": 2.4,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 0.9,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-11T18:22:28.229614Z",
          "id": "CVE-2026-44658",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/zen-browser/desktop/security/advisories/GHSA-cc9c-mmmf-c5j6",
      "source": "[email protected]"
    }
  ]
}