PlantUML is a widely embedded diagram-as-code tool used across documentation, CI/CD pipelines, and web-based rendering systems, creating exposure in both server-side processing and client-facing contexts. Its observed vulnerabilities concentrate on input-handling and access-control weaknesses—notably cross-site scripting, server-side request forgery, and improper access control—reflecting the parsing demands and network exposure inherent to a rendering engine that accepts and processes untrusted markup. Live severity, exploitation, and exposure counts are shown alongside this summary.
The number and severity of CVEs published that impact products developed by Plantuml over time
Signals from CVEs in this vendor scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2023-3432CRITICAL Server-Side Request Forgery (SSRF) in GitHub repository plantuml/plantuml prior to 1.2023.9. | Jun 27, 2023 | 10.0 | 30 | NO | NO |
CVE-2022-1379CRITICAL URL Restriction Bypass in GitHub repository plantuml/plantuml prior to V1.2022.5. An attacker can abuse this to bypass URL restrictions that are imposed by the different security p | May 14, 2022 | 9.1 | 28 | NO | NO |
CVE-2026-0858MEDIUM 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 | Jan 16, 2026 | 6.1 | 22 | NO | NO |
CVE-2023-3431MEDIUM Improper Access Control in GitHub repository plantuml/plantuml prior to 1.2023.9. | Jun 27, 2023 | 5.3 | 18 | NO | NO |
CVE-2022-1231MEDIUM XSS via Embedded SVG in SVG Diagram Format in GitHub repository plantuml/plantuml prior to 1.2022.4. Stored XSS in the context of the diagram embedder. Depending on the actual cont | Apr 15, 2022 | 6.1 | 17 | NO | NO |
Signals from CVEs in this vendor scope (5 CVEs).
An overview of all social media posts that mention a CVE ID that affects a product developed by Plantuml.
Media articles that mention a CVE ID that affects a product developed by Plantuml — matched by CVE ID, not by vendor name.