CVE-2026-42140

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{"affected": [{"affectedData": [{"product": "macro-plantuml", "vendor": "xwiki-contrib", "versions": [{"status": "affected", "version": "< 2.4.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "PlantUML Macro is a macro for rendering UML diagrams from simple textual schemes. Prior to version 2.4.1, the PlantUML Macro is vulnerable to Server-Side Request Forgery (SSRF). The macro allows users to specify an alternative PlantUML server via the server parameter. However, the application does not validate the supplied URL. An attacker can supply an internal IP address or a malicious external URL. The XWiki server will attempt to connect to this URL to \"render\" the diagram. This issue has been patched in version 2.4.1."}, {"lang": "es", "value": "Macro PlantUML es una macro para renderizar diagramas UML a partir de esquemas textuales simples. Antes de la versi\u00f3n 2.4.1, la Macro PlantUML es vulnerable a falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF). La macro permite a los usuarios especificar un servidor PlantUML alternativo a trav\u00e9s del par\u00e1metro \u2019server\u2019. Sin embargo, la aplicaci\u00f3n no valida la URL proporcionada. Un atacante puede proporcionar una direcci\u00f3n IP interna o una URL externa maliciosa. El servidor XWiki intentar\u00e1 conectarse a esta URL para \u2019renderizar\u2019 el diagrama. Este problema ha sido parcheado en la versi\u00f3n 2.4.1."}], "id": "CVE-2026-42140", "lastModified": "2026-10-26T19:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 2.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42140", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-04T19:51:44.271981Z", "version": "2.0.3"}}]}, "published": "2026-05-04T18:16:31.677", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/xwiki-contrib/macro-plantuml/commit/c8b19bda93058794e04c8862fc7ca85c59b5fe5c"}, {"source": "security-advisories@github.com", "url": "https://github.com/xwiki-contrib/macro-plantuml/security/advisories/GHSA-42fc-7w97-8vrc"}, {"source": "security-advisories@github.com", "url": "https://jira.xwiki.org/browse/PLANTUML-25"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "macro-plantuml", "source": "cna", "vendor": "xwiki-contrib"}, "product": "macro-plantuml", "vendor": "xwiki-contrib"}], "created": "2026-05-04T18:30:06.102461+00:00", "updated": "2026-05-04T19:43:48.586633+00:00", "vendors": ["xwiki-contrib", "xwiki-contrib$PRODUCT$macro-plantuml"]}