Description
Discourse Calendar plugin adds the ability to create a dynamic calendar in the first post of a topic to Discourse. Rendering event names can be susceptible to XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse’s default Content Security Policy. The issue is patched in version 0.5 of the Discourse Calendar plugin.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_confirm
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-rq37-8pf3-4xc8
Scores
CVSS v3
6.1
EPSS
0.0080
EPSS Percentile
74.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
discourse/calendar
< 0.5
Published
Sep 12, 2024
Tracked Since
Feb 18, 2026