{"id":"CVE-2026-0858","state":"PUBLISHED","title":"Versions of the package net.sourceforge.plantuml:plantuml before 1.2026.0 are vulnerable to Stored XSS due to insufficient sanitization of interactive attributes in GraphViz diagra","description":"Versions of the package net.sourceforge.plantuml:plantuml before 1.2026.0 are vulnerable to Stored XSS due to insufficient sanitization of interactive attributes in GraphViz diagrams. As a result, a crafted PlantUML diagram can inject malicious JavaScript into generated SVG output, leading to arbitrary script execution in the context of applications that render the SVG.","publishedAt":"2026-01-16T05:00:06.808Z","updatedAt":"2026-01-16T14:10:00.485Z","severity":{"score":5.1,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P","source":"snyk"},"assigner":"snyk","products":["n/a net.sourceforge.plantuml:plantuml"],"affected":[{"vendor":"n/a","product":"net.sourceforge.plantuml:plantuml","versions":[{"version":"0","status":"affected","lessThan":"1.2026.0","versionType":"semver"}]}],"references":["https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230","https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd","https://github.com/plantuml/plantuml/releases/tag/v1.2026.0"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/0xxx/CVE-2026-0858.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0858","state":"PUBLISHED","datePublished":"2026-01-16T05:00:06.808Z","dateUpdated":"2026-01-16T14:10:00.485Z","assignerShortName":"snyk","assignerOrgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","dateReserved":"2026-01-12T09:57:41.760Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Versions of the package net.sourceforge.plantuml:plantuml before 1.2026.0 are vulnerable to Stored XSS due to insufficient sanitization of interactive attributes in GraphViz diagrams. As a result, a crafted PlantUML diagram can inject malicious JavaScript into generated SVG output, leading to arbitrary script execution in the context of applications that render the SVG."}],"affected":[{"vendor":"n/a","product":"net.sourceforge.plantuml:plantuml","versions":[{"version":"0","status":"affected","lessThan":"1.2026.0","versionType":"semver"}]}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230"},{"url":"https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd"},{"url":"https://github.com/plantuml/plantuml/releases/tag/v1.2026.0"}],"metrics":[{"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","exploitCodeMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P"},"cvssV4_0":{"version":"4.0","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:P"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"Stored XSS","lang":"en"}]}],"providerMetadata":{"shortName":"snyk","orgId":"bae035ff-b466-4ff4-94d0-fc9efd9e1730","dateUpdated":"2026-01-16T05:00:06.808Z"},"credits":[{"value":"Catalin Iovita (Snyk Security Research)","lang":"en"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-16T14:09:52.779738Z","id":"CVE-2026-0858","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-16T14:10:00.485Z"}}]}}}