What is CVE-2026-14827?

CVE-2026-14827 is a medium-severity vulnerability in Calendar, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-07-27.

How severe is CVE-2026-14827?

Medium severity. CVSS v3 base score is 6.8 out of 10.

XSS in Calendar

CVE-2026-14827

The Calendar WordPress plugin before 1.3.18 does not properly escape a user-supplied event field before outputting it inside an HTML attribute on a public-facing page, allowing users with the Contributor role to inject arbitrary JavaScript…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

Affected products

Unknown Calendar — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-14827?: CVE-2026-14827 is a medium-severity vulnerability in Calendar, classified under Cross-site Scripting. CVSS score: 6.8/10. Published 2026-07-27.
How severe is CVE-2026-14827?: Medium severity. CVSS v3 base score is 6.8 out of 10.