CVE-2022-46180

Name: CVE-2022-46180
Creator: NVD / NIST
Published: 2023-01-04T17:15:08.847+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2022-46180 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.47%

37.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Discourse	Mermaid	>= 1.0.0, < 1.1.0

References

https://github.com/discourse/discourse-mermaid-theme-component/commit/c10bc4a08bf865cee20e5d5dffba535762813f0fPatch, Third Party Advisory
https://github.com/discourse/discourse-mermaid-theme-component/pull/14Patch, Third Party Advisory
https://github.com/discourse/discourse-mermaid-theme-component/security/advisories/GHSA-8437-hgcm-p3q3Third Party Advisory
https://github.com/discourse/discourse-mermaid-theme-component/commit/c10bc4a08bf865cee20e5d5dffba535762813f0fPatch, Third Party Advisory
https://github.com/discourse/discourse-mermaid-theme-component/pull/14Patch, Third Party Advisory
https://github.com/discourse/discourse-mermaid-theme-component/security/advisories/GHSA-8437-hgcm-p3q3Third Party Advisory

Timeline

Published: Jan 4, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-46180?

How severe is CVE-2022-46180?

CVE-2022-46180 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2022-46180?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-46180?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST