XSS in Community Events

CVE-2026-86794

The Community Events WordPress plugin before 1.6.0 does not have authorisation or nonce checks when processing public event submissions, and does not escape several of the submitted values before outputting them in the administration dashboard and on the public calendar, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of an administrator reviewing the submission.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

  • Community Events

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-86794?
CVE-2026-86794 is a high-severity vulnerability in Community Events, classified under Cross-site Scripting. CVSS score: 8.8/10. Published 2026-10-29.
How severe is CVE-2026-86794?
High severity. CVSS v3 base score is 8.8 out of 10.