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Plugin Vulnerability Hub
Plugin 5 known issues Latest disclosed Dec 22, 2025

Calendar Vulnerabilities

Review known vulnerability records for the WordPress plugin Calendar (`calendar`), including severity, CVE references, affected versions, and patch status.

Recent tracked CVEs on this page include CVE-2025-14548, CVE-2024-2831 and CVE-2018-18872, so operators can jump from disclosure to patch validation without scanning the full feed first.

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Known Records
5
High or Critical
2
Patch Coverage
100%
Last Updated
Dec 23, 2025
Related Security Guides

Use these guides while reviewing Calendar fixes

Pair this plugin vulnerability hub with practical WordPress hardening, scanner, and patch workflow guidance.

Hardening
WordPress hardening checklist for exposed plugins

Review patch cadence, privileged access, XML-RPC exposure, backups, and monitoring controls.
Plugin Security
WordPress plugin security basics for patch decisions

Use ownership, update testing, least privilege, and removal criteria to reduce plugin risk.
Scanning
WordPress vulnerability scanner buyer's guide

Compare scanner coverage for plugin CVEs, version detection, alert noise, and remediation workflow.
Patch Decision Workflow

How to prioritize Calendar remediation

Use the hub as a decision layer before opening individual records: confirm whether the issue has a CVE, whether a fixed version exists, and whether the affected range overlaps production installs.

Search-Ready Records
5
1. Match the Package
Confirm the installed WordPress plugin slug is calendar before acting on any CVE from this cluster.
2. Sort by Severity
Start with 2 high or critical records, then review medium and unrated findings with public references.
3. Check Patch Evidence
5 records include a patch path; verify compatibility before closing the finding.
4. Monitor Gaps
0 records still lack a listed fixed release, so keep this hub in the review queue.
High-Signal Remediation Targets
CVE-2024-2831 High
SQL Injection remediation for Calendar

Affected range: Versions up to 1.3.14. Fixed version: 1.3.15.

CVE-2025-14548 Medium
Stored Cross-Site Scripting remediation for Calendar

Affected range: Versions up to 1.3.16. Fixed version: 1.3.17.

CVE-2018-18872 Medium
Stored Cross-Site Scripting remediation for Calendar

Affected range: Versions before 1.3.11. Fixed version: 1.3.11.

CVE-2013-2698 Medium
Cross-Site Request Forgery remediation for Calendar

Affected range: Versions up to 1.3.2. Fixed version: 1.3.3.

Priority CVE Quick Links

Fast paths into Calendar CVE reports

Start with the highest-signal CVE records for this WordPress plugin before scanning the full vulnerability feed.

Indexed CVEs
4
Tracked CVE Issue Type Affected Versions Fixed Version CVSS
CVE-2024-2831
Calendar <= 1.3.14 - Authenticated (Contributor+) SQL Injection via Shortcode
 SQL Injection Versions up to 1.3.14 1.3.15 CVSS 8.8
CVE-2025-14548
Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'e...
 Stored Cross-Site Scripting Versions up to 1.3.16 1.3.17 CVSS 6.4
CVE-2018-18872
Calendar <= 1.3.10 - Authenticated Stored Cross-Site Scripting
 Stored Cross-Site Scripting Versions before 1.3.11 1.3.11 CVSS 5.4
CVE-2013-2698
Calendar <= 1.3.2 - Cross-Site Request Forgery
 Cross-Site Request Forgery Versions up to 1.3.2 1.3.3 CVSS 4.3
CVE-2024-2831 High 1.3.15
CVE-2024-2831 Calendar SQL Injection

Calendar <= 1.3.14 - Authenticated (Contributor+) SQL Injection via Shortcode

CVE-2025-14548 Medium 1.3.17
CVE-2025-14548 Calendar Stored Cross-Site Scripting

Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'event_desc'

CVE-2018-18872 Medium 1.3.11
CVE-2018-18872 Calendar Stored Cross-Site Scripting

Calendar <= 1.3.10 - Authenticated Stored Cross-Site Scripting

CVE-2013-2698 Medium 1.3.3
CVE-2013-2698 Calendar Cross-Site Request Forgery

Calendar <= 1.3.2 - Cross-Site Request Forgery

Coverage Snapshot

What this page helps you verify fast

This hub clusters tracked records for Calendar so operators can confirm whether a disclosed issue maps to the installed slug, version range, and patch path.

Patch Visibility
5 records include a published patch path, leaving 0 with no listed safe release yet.
Severity Mix
0 critical and 2 high severity findings.
Recent CVEs
CVE-2025-14548, CVE-2024-2831 and CVE-2018-18872
Reference Workflow
Jump from the hub into the full report when you need remediation notes, exploit context, CVSS vectors, or source references.
Triage First

Open the records most likely to drive action

These recent records surface the CVE strings, patch cues, and direct report links most operators need first.

Known Vulnerabilities

Reports for Calendar

Sorted by latest disclosure date so newly published issues surface first.

Plugin Medium Patched: Yes CVE-2025-14548
CVE-2025-14548: Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'event_desc'

The Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'event_desc' parameter in all versions up to, and including, 1.3.16 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contribu...

Published
Dec 22, 2025
Patched Release
1.3.17
Affected Versions
Versions up to 1.3.16
Next Step
Update to 1.3.17 or newer if supported.
Review CVE-2025-14548 fixed version details Open CVE Reference
Plugin High Patched: Yes CVE-2024-2831
CVE-2024-2831: Calendar <= 1.3.14 - Authenticated (Contributor+) SQL Injection via Shortcode

The Calendar plugin for WordPress is vulnerable to SQL Injection via the plugin's shortcodes in all versions up to, and including, 1.3.14 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possib...

Published
Apr 29, 2024
Patched Release
1.3.15
Affected Versions
Versions up to 1.3.14
Next Step
Update to 1.3.15 or newer if supported.
Review CVE-2024-2831 fixed version details Open CVE Reference
Plugin Medium Patched: Yes CVE-2018-18872
CVE-2018-18872: Calendar <= 1.3.10 - Authenticated Stored Cross-Site Scripting

The Kieran O'Shea Calendar plugin before 1.3.11 for WordPress has Stored XSS via the event_title parameter in a wp-admin/admin.php?page=calendar add action, or the category name during category creation at the wp-admin/admin.php?page=calendar-categories URI.

Published
Oct 30, 2018
Patched Release
1.3.11
Affected Versions
Versions before 1.3.11
Next Step
Update to 1.3.11 or newer if supported.
Review CVE-2018-18872 fixed version details Open CVE Reference
Plugin High Patched: Yes
Calendar < 1.3.8 - Reflected Cross-Site Scripting

The Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions before 1.3.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if the...

Published
Nov 08, 2016
Patched Release
1.3.8
Affected Versions
Versions before 1.3.8
Next Step
Update to 1.3.8 or newer if supported.
Review Calendar vulnerability details
Plugin Medium Patched: Yes CVE-2013-2698
CVE-2013-2698: Calendar <= 1.3.2 - Cross-Site Request Forgery

Cross-site request forgery (CSRF) vulnerability in the Calendar plugin before 1.3.3 for WordPress allows remote attackers to hijack the authentication of users for requests that add a calendar entry via unspecified vectors.

Published
Aug 01, 2014
Patched Release
1.3.3
Affected Versions
Versions up to 1.3.2
Next Step
Update to 1.3.3 or newer if supported.
Review CVE-2013-2698 fixed version details Open CVE Reference