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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd	Patch
https://github.com/plantuml/plantuml/releases/tag/v1.2026.0	Release Notes
https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230	Vendor Advisory Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:plantuml:plantuml:*:*:*:*:*:*:*:*

History

02 Feb 2026, 18:52

Type	Values Removed	Values Added
References	~~() https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd -~~	() https://github.com/plantuml/plantuml/commit/6826315db092d2e432aeab1a0894e08017c6e4bd - Patch
References	~~() https://github.com/plantuml/plantuml/releases/tag/v1.2026.0 -~~	() https://github.com/plantuml/plantuml/releases/tag/v1.2026.0 - Release Notes
References	~~() https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230 -~~	() https://security.snyk.io/vuln/SNYK-JAVA-NETSOURCEFORGEPLANTUML-14552230 - Vendor Advisory, Patch
First Time		Plantuml plantuml Plantuml
CPE		cpe:2.3:a:plantuml:plantuml::::::::

16 Jan 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-16 05:16

Updated : 2026-02-02 18:52

NVD link : CVE-2026-0858

Mitre link : CVE-2026-0858

CVE.ORG link : CVE-2026-0858

JSON object : View

Products Affected

plantuml

plantuml

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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