Bypassing height value allowed in some theme components
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, some theme components allow users to add svgs with unlimited `height` attributes, and this can affect the availability of subsequent replies in a topic. Most Discourse instances are unaffected, only instances with the svgbob or the mermaid theme component are within scope. The issue is patched in version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches. As a workaround, disable or remove the relevant theme components.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-46130US | medium5.4 | — | ||
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, some… | ||||
references
External citations — patches, advisories, analysis.
- https://github.com/discourse/discourse/commit/6183d9633de873ac2b1e9cdb6ac1c94b4ffae9cbFIX
- https://github.com/discourse/discourse/commit/89a2e60706ce22e4afc463d03af2f34c53291800FIX
- https://github.com/discourse/discourse/security/advisories/GHSA-c876-638r-vfcgADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2023-46130WEB
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