XSS in Discourse Discourse-calendar

CVE-2023-43658

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 'ema…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (39.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-43658?
CVE-2023-43658 is a high-severity vulnerability in Discourse Discourse-calendar, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2023-10-16.
How severe is CVE-2023-43658?
High severity. CVSS v3 base score is 8.0 out of 10.