2 lines
5.4 KiB
JSON
2 lines
5.4 KiB
JSON
{"affected":[{"affectedData":[{"defaultStatus":"unaffected","packageURL":"pkg:pypi/justhtml","product":"justhtml","vendor":"EmilStenstrom","versions":[{"lessThan":"1.18.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"1.18.0","versionType":"semver"}]}],"source":"disclosure@vulncheck.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"justhtml before 1.18.0 contains multiple low-severity denial-of-service issues in CSS selector handling and linkification. Applications that evaluate attacker-controlled selector strings (via query(), matches(), or selector-based transforms), run selector matching over very large untrusted documents, construct DOM trees from untrusted structure, or enable linkification over attacker-controlled text may consume disproportionate CPU or memory. Triggers include oversized selectors, large selector lists, oversized compound selectors, long combinator chains, deeply nested functional pseudo-classes, repeated token/positional matching, cyclic DOM graphs causing non-terminating traversal, and punctuation-heavy or trailing-bracket linkification input. These are availability-only concerns and do not by themselves allow script execution, data disclosure, or sanitizer bypass. Default JustHTML(sanitize=True) usage is not expected to be exposed, since selectors are normally supplied by application code."},{"lang":"es","value":"justhtml anterior a la versión 1.18.0 contiene múltiples problemas de denegación de servicio de baja gravedad en el manejo de selectores CSS y la linkificación. Las aplicaciones que evalúan cadenas de selectores controladas por el atacante (a través de query(), matches() o transformaciones basadas en selectores), ejecutan la coincidencia de selectores sobre documentos no confiables muy grandes, construyen árboles DOM a partir de estructuras no confiables, o habilitan la linkificación sobre texto controlado por el atacante pueden consumir una cantidad desproporcionada de CPU o memoria. Los desencadenantes incluyen selectores de tamaño excesivo, listas de selectores grandes, selectores compuestos de tamaño excesivo, cadenas de combinadores largas, pseudoclases funcionales profundamente anidadas, coincidencia repetida de tokens/posicional, gráficos DOM cíclicos que causan un recorrido no terminante, y entrada de linkificación con mucha puntuación o corchetes finales. Estas son preocupaciones solo de disponibilidad y no permiten por sí mismas la ejecución de scripts, la divulgación de datos o la omisión del saneador. El uso predeterminado de JustHTML(sanitize=True) no se espera que esté expuesto, ya que los selectores son normalmente proporcionados por el código de la aplicación."}],"id":"CVE-2026-4671","lastModified":"2026-10-12T16:10:00.220","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"disclosure@vulncheck.com","type":"Secondary"}],"cvssMetricV40":[{"cvssData":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","availabilityRequirement":"NOT_DEFINED","baseScore":8.7,"baseSeverity":"HIGH","confidentialityRequirement":"NOT_DEFINED","exploitMaturity":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"source":"disclosure@vulncheck.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-4671","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-24T18:08:58.030472Z","version":"2.0.3"}}]},"published":"2026-08-23T14:16:53.293","references":[{"source":"disclosure@vulncheck.com","url":"https://github.com/EmilStenstrom/justhtml/security/advisories/GHSA-r8cj-3554-33mr"},{"source":"disclosure@vulncheck.com","url":"https://www.vulncheck.com/advisories/justhtml-before-denial-of-service-via-css-selector"}],"sourceIdentifier":"disclosure@vulncheck.com","vulnStatus":"Deferred","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"disclosure@vulncheck.com","type":"Secondary"}]}
|