CVE-2026-14827

MEDIUM

Calendar < 1.3.18 - Contributor+ Stored XSS via event_link Parameter

Title source: cna

Description

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 that executes in the browser of anyone viewing the calendar.

References (1)

Core 1

Core References

Exploit exploit vdb-entry technical-description

https://wpscan.com/vulnerability/b2981b41-b712-43d9-a327-3a376346cec5/

Scores

CVSS v3 6.8

EPSS 0.0024

EPSS Percentile 14.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-79

Status published

Products (1)

None/Calendar < 1.3.18

Published Jul 27, 2026

Tracked Since Jul 27, 2026