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PatchSiren cyber security CVE debrief

CVE-2026-6854 joedolson CVE debrief

The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to time-based blind SQL Injection via the 'mc_auth' parameter in all versions up to, and including, 3.7.8. This is due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. Unauthenticated attackers can append additional SQL queries into existing queries to extract sensitive information from the database.

Vendor
joedolson
Product
My Calendar – Accessible Event Manager
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-08
Original CVE updated
2026-07-08
Advisory published
2026-07-08
Advisory updated
2026-07-08

Who should care

Users of the My Calendar – Accessible Event Manager plugin for WordPress, especially those with versions up to and including 3.7.8, should be aware of this vulnerability and take immediate action to protect their installations.

Technical summary

The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to time-based blind SQL Injection. The vulnerability exists in the 'mc_auth' parameter across all versions up to, and including, 3.7.8. The issue arises from insufficient escaping of user-supplied parameters and inadequate preparation of existing SQL queries. This allows unauthenticated attackers to inject additional SQL queries into existing ones, enabling the extraction of sensitive information from the database.

Defensive priority

High priority should be given to updating the My Calendar – Accessible Event Manager plugin to a version beyond 3.7.8. In the meantime, additional defensive measures such as monitoring for suspicious database queries and restricting access to the plugin's functionality should be considered.

Recommended defensive actions

  • Update the My Calendar – Accessible Event Manager plugin to the latest version.
  • Monitor database queries for suspicious activity.
  • Restrict access to the plugin's functionality.
  • Implement additional security measures to detect and prevent SQL injection attacks.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
  • Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
  • Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.

Evidence notes

The CVE record was published on 2026-07-08T12:17:21.137Z and was last modified on 2026-07-08T14:55:07.843Z. The NVD entry is currently Deferred. References include Wordfence threat intelligence and WordPress Trac changeset.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-6854 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-6854

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-6854 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-6854

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.