8

CVE-2023-43658

Improper escaping of user input in discourse-calendar

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Discourse ≫ Discourse Calendar SwPlatformdiscourse Version <= 2023-10-16
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.5% 0.388
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.1 2.8 2.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
security-advisories@github.com 8 2.1 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
Third Party Advisory
https://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644de
Patch
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-3fwj-f6ww-7hr6
Vendor Advisory