VulnSocial

CVE-2026-0858Disclosure(plantuml / plantuml)

LOWCVSS 2.0 · LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

plantuml CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • plantuml

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
plantuml
Products
plantuml

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-02-09: 1Technical Details · 2026-02-09: 102-09
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Ferramentas Linux@Cezar_H_Linux
    Disclosure

    Critical security advisory: CVE-2026-0858 in PlantUML represents a stored cross-site scripting vulnerability enabling arbitrary script execution through GraphViz diagrams. Read more: 👉 https://tinyurl.com/3stzs37p #Fedora #Security https://t.co/8m1tZ8K17K

    Post summary

    The tweet announces a critical stored XSS flaw (CVE-2026-0858) in PlantUML that allows arbitrary script execution via GraphViz diagrams, but provides no patch, exploit code, or active‑exploitation evidence.

    0000087
    1.3K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appplantumlplantuml---

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