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CVE-2026-0858

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b1a42ec58d9cc4bda4c37ff7bb7ab6c6cb9c2eb7b0aaf60a5493eb3826de7a2b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/metrics/0/cvssV3_1

Affected products and versions

1 source assertion
{"product":"net.sourceforge.plantuml:plantuml","vendor":"n/a","versions":[{"lessThan":"1.2026.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","exploitCodeMaturity":"PROOF_OF_CONCEPT","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"Stored XSS","lang":"en"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"url":"https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/references/1
{"url":"https://github.com/plantuml/plantuml/releases/tag/v1.2026.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/references/2
{"url":"https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b01e39a48db2420a234abd9d927f0652fe80badae38e398b30b3adf603602fd3 · sha256:2b6a1b60755fe457… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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