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Medium severity4.4NVD Advisory· Published Mar 19, 2026· Updated Jun 17, 2026

CVE-2026-33395

CVE-2026-33395

Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the discourse-graphviz plugin contains a stored cross-site scripting (XSS) vulnerability that allows authenticated users to inject malicious JavaScript code through DOT graph definitions. For instances with CSP disabled only. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, disable the graphviz plugin, upgrade to a patched version, or enable a content security policy.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6
  • Discourse (software)/Discourse4 versions
    cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*range: >=2026.1.0,<2026.1.2
    • cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*
    • (no CPE)range: <2026.3.0-latest.1, <2026.2.1, <2026.1.2
    • (no CPE)range: >= 2026.1.0-latest, < 2026.1.2
  • Discourse (software)/discourse-graphvizllm-create
    Range: <2026.3.0-latest.1, <2026.2.1, <2026.1.2
  • osv-coords
    pkg:bitnami/discourse
    Range: >= 2026.1.0, < 2026.1.2

Patches

Vulnerability mechanics

References

4

News mentions

0

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