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Description

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, updating a category description via API is not sanitizing the description string, which can lead to XSS attacks. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

PUBLISHED Reserved 2026-03-11 | Published 2026-03-31 | Updated 2026-03-31 | Assigner GitHub_M




MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

>= 2026.1.0-latest, < 2026.1.3
affected

>= 2026.2.0-latest, < 2026.2.2
affected

>= 2026.3.0-latest, < 2026.3.0
affected

References

github.com/...course/security/advisories/GHSA-h2h4-767x-6pc8

github.com/...ommit/05e3da2a670cfd499649128b6c955b552451240b

cve.org (CVE-2026-32273)

nvd.nist.gov (CVE-2026-32273)

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