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Status published
Medium
CVE-2023-26040
Discourse chat messages susceptible to Cross-site Scripting through chat excerpts
Vulnerability Description
Discourse is an open-source discussion platform. Between versions 3.1.0.beta2 and 3.1.0.beta3 of the `tests-passed` branch, editing or responding to a chat message containing malicious content could lead to a cross-site scripting attack. This issue is patched in version 3.1.0.beta3 of the `tests-passed` branch. There are no known workarounds.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
discourse
View all reports →Affected Software
discourse
Vulnerable Versions:
tests-passed > 3.1.0.beta2, < 3.1.0.beta3
Timeline
Official Publish:
March 17th, 2023
Last Modified:
February 25th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L