Back to Database
Status published
Medium
CVE-2024-45303
Discourse Calendar plugin event names susceptible to XSS
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2024-45303
Credits & Attribution
No credits recorded in the NVD database.
References
More from discourse
View All →CVE-2025-69289
Discourse has insecure default configuration that allows non-admin moderators to takeover any non-staff account via email change
Medium
5.1
CVE-2025-69218
Discourse moderators can access admin-only reports exposing private upload URLs
High
7.1
CVE-2025-68934
Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint
Medium
6.5
CVE-2025-68933
Discourse non-admin moderators can exfiltrate private content via post ownership transfer
Medium
6.9
CVE-2025-68666
Discourse users archives leaked to users with moderation privileges
Medium
5.9
Affected Vendor
discourse
View all reports →Affected Software
discourse-calendar
Vulnerable Versions:
< 0.5
Timeline
Official Publish:
September 12th, 2024
Last Modified:
September 12th, 2024
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N