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TI-2026-06012 Aliases CVE-2026-6854GHSA-r6mh-qhp6-q734

My Calendar <= 3.7.8 - Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters

Priority LOW 36CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
SQL injection
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

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 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01577 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
joedolsonMy Calendar – Accessible Event Managerup to 3.7.8—No fix listedCNA
  • My Calendar – Accessible Event Manager Vendorjoedolson Affected up to 3.7.8 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-6854
  2. 2026-10-03 Alias added: GHSA-r6mh-qhp6-q734

References

Other 2

  • TI-2023-05838 SQL injection in my-calendar CVSS 3.1CRITICAL 9.8
  • TI-2026-29085 My Calendar: Unauthenticated Information Disclosure (IDOR) via Multisite switch_to_blog CVSS 4.0HIGH 8.8
  • TI-2024-01186 My Calendar < 3.4.24 - Authenticated Stored XSS CVSS 3.1MEDIUM 5.4
  • TI-2026-75163 Unauthenticated privilege escalation in My Calendar WordPress plugin CVSS 3.1CRITICAL 9.8
  • TI-2025-03313 My Tickets – Accessible Event Ticketing <= 2.0.16 - Authenticated (Subscriber+) Privilege Escalation CVSS 3.1HIGH 8.8
  • TI-2026-21820 WordPress My Tickets plugin <= 2.1.0 - Sensitive Data Exposure vulnerability CVSS 3.1HIGH 7.5
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences