CVE-2026-49452

{"id": "CVE-2026-49452", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-49452", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-19T15:12:11.871495Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "Kozea", "product": "WeasyPrint", "versions": [{"status": "affected", "version": "< 69.0"}]}]}], "published": "2026-08-18T18:17:49.147", "references": [{"url": "https://github.com/Kozea/WeasyPrint/commit/e158264e33fa399b29f415d30719c1d85a55df1d", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kozea/WeasyPrint/pull/2773", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kozea/WeasyPrint/releases/tag/v69.0", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-jhhc-3hcp-qhm5", "source": "security-advisories@github.com"}, {"url": "https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-jhhc-3hcp-qhm5", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-74"}]}], "descriptions": [{"lang": "en", "value": "WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/__init__.py when presentational_hints=True. The background attribute is inserted into a background-image:url() declaration and parsed by tinycss2.parse_blocks_contents(), allowing untrusted HTML to inject additional CSS declarations. Applications that render untrusted HTML with presentational hints enabled can be affected by CSS injection and server-side requests through injected url() values. This issue is fixed in version 69.0."}, {"lang": "es", "value": "WeasyPrint ayuda a los desarrolladores web a crear documentos PDF. Antes de la versi\u00f3n 69.0, WeasyPrint incrusta valores de atributos de sugerencia presentacional HTML sin escapar en CSS en weasyprint/css/__init__.py cuando presentational_hints=True. El atributo background se inserta en una declaraci\u00f3n background-image:url() y es analizado por tinycss2.parse_blocks_contents(), permitiendo que HTML no confiable inyecte declaraciones CSS adicionales. Las aplicaciones que renderizan HTML no confiable con las sugerencias presentacionales habilitadas pueden verse afectadas por inyecci\u00f3n CSS y solicitudes del lado del servidor a trav\u00e9s de valores url() inyectados. Este problema se ha solucionado en la versi\u00f3n 69.0."}], "lastModified": "2026-10-22T22:10:00.250", "sourceIdentifier": "security-advisories@github.com"}