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CVE-2026-65903

Estado: AnalizadaMedia (5.1)—

DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Cure53 — Dompurify

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-65903",
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          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-07-23T15:35:39.880761Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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          "userInteraction": "REQUIRED",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
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  "published": "2026-07-23T14:18:05.903",
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      "url": "https://github.com/cure53/DOMPurify/security/advisories/GHSA-39q2-94rc-95cp",
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        "Third Party Advisory"
      ],
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    },
    {
      "url": "https://www.vulncheck.com/advisories/dompurify-before-add-tags-function-bypasses-forbid-tags",
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      "description": [
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          "value": "CWE-697"
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      "value": "DOMPurify before 3.4.0 contains a logic error in the ADD_TAGS function where short-circuit evaluation allows forbidden tags to bypass FORBID_TAGS restrictions. Attackers can craft input containing tags listed in FORBID_TAGS that are also added via ADD_TAGS function, causing them to be retained in sanitized output."
    }
  ],
  "lastModified": "2026-07-28T15:51:38.570",
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