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.
References (3)
Core 3
Core References
Vendor Advisory, Patch
https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230
Scores
CVSS v3
6.1
EPSS
0.0001
EPSS Percentile
3.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
net.sourceforge.plantuml/plantuml
0 - 1.2026.0Maven
plantuml/plantuml
< 1.2026.0
Published
Jan 16, 2026
Tracked Since
Feb 18, 2026