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CVE-2026-0858

2.0 lowEPSS 0.3%

Low (2.0) in plantuml plantuml. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in net.sourceforge.plantuml:plantuml 1.2026.0.

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.

Severity

CVSS 4.0

2.0 low
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

CVSS 3.1

6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-31)
CWE
CWE-79
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-hrvf-g648-rf3mMavennet.sourceforge.plantuml:plantuml<1.2026.01.2026.0

References

Check your stackJSON