CVE-2023-43658: high-severity vulnerability in discourse-calendar
Improper escaping of user input in discourse-calendar
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8epss 0.6%
dicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Improper escaping of event titles could lead to Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled. Having CSP disabled is a non-default configuration, so the vast majority of sites are unaffected. This problem is resolved in the latest version of the discourse-calendar plugin. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected products
discourse · discourse-calendarRelated CVEs — discourse-calendar
In the same product, most dangerous first.
CVE-2022-31059MEDIUMDiscourse Calendar Event names susceptible to Cross-site ScriptingEPSS 0.8%CVE-2022-41913MEDIUMDiscourse-calendar exposes members of hidden groupsEPSS 0.4%CVE-2024-24817MEDIUMUser can see invitees in events created in PMs and private categoriesEPSS 0.4%CVE-2024-26145MEDIUMUninvited user is able to join and mark the attendance of the the private eventEPSS 0.4%CVE-2024-21658MEDIUMInsufficient control of region value length in discourse-calendarEPSS 0.4%CVE-2024-45303MEDIUMDiscourse Calendar plugin event names susceptible to XSSEPSS 0.3%