Calendar Plugin up to 1.3.17 on WordPress Event cross site scripting

Summaryinfo

A vulnerability has been found in Calendar Plugin up to 1.3.17 and classified as problematic. The impacted element is an unknown function. Performing a manipulation of the argument Event results in cross site scripting. This vulnerability is cataloged as CVE-2026-14827. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Calendar Plugin up to 1.3.17. It has been classified as problematic. This affects an unknown part. The manipulation of the argument event with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. 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. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at wpscan.com. This vulnerability is uniquely identified as CVE-2026-14827 since 07/06/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.3.18 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Name

• Calendar Plugin

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7
• 1.3.8
• 1.3.9
• 1.3.10
• 1.3.11
• 1.3.12
• 1.3.13
• 1.3.14
• 1.3.15
• 1.3.16
• 1.3.17

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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