CVE-2022-46180 (GCVE-0-2022-46180)
Vulnerability from cvelistv5 – Published: 2023-01-04 16:44 – Updated: 2025-03-10 21:32
VLAI
EPSS
VEX
Title
Arbitrary HTML injection in discourse-mermaid-theme-component
Summary
Discourse Mermaid (discourse-mermaid-theme-component) allows users of Discourse, open-source forum software, to create graphs using the Mermaid syntax. Users of discourse-mermaid-theme-component version 1.0.0 who can create posts are able to inject arbitrary HTML on that post. The issue has been fixed on the `main` branch of the GitHub repository, with 1.1.0 named as a patched version. Admins can update the theme component through the admin UI. As a workaround, admins can temporarily disable discourse-mermaid-theme-component.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-10 21:00 UTC
CWE
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/discourse/discourse-mermaid-th… | x_refsource_CONFIRM |
| https://github.com/discourse/discourse-mermaid-th… | x_refsource_MISC |
| https://github.com/discourse/discourse-mermaid-th… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| discourse | discourse-mermaid-theme-component |
Affected:
= 1.0.0
|
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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