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WordPress plugins

CVE-2026-104798

My Calendar <= 3.8.7 - Unauthenticated Privilege Escalation to 'mcs' Parameter via Reflected Shortcode Injection into 'above' Attribute

Severity
Critical 9.8
Published
16 Oct 2026
Last changed
16 Oct 2026
Added to UpHeron
3 Nov 2026
Sources
CVE Program

Affected software

SoftwareAffected versions
My Calendar (WordPress plugin)WordPress plugins · wp-plugin:my-calendar
  • Every version up to 3.4.24
  • From 3.5 up to 3.5.21
  • From 3.6 up to 3.6.17
  • From 3.7 up to 3.7.17
  • From 3.8 up to 3.8.7

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-104798