CVE-2026-0858

MEDIUM

6.1

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.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published1/16/2026

Last Modified2/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

plantuml:plantuml

Weaknesses (CWE)

CWE-79

References

https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd(report@snyk.io)

https://github.com/plantuml/plantuml/releases/tag/v1.2026.0(report@snyk.io)

https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230(report@snyk.io)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.