CVE-2026-119714

My Calendar WordPress plugin 3.8.8 before 3.8.11 contains a shortcode injection vulnerability that allows unauthenticated attackers to execute registered shortcodes via the mcs search parameter. The mcs value reaches mc_search_results() in src/my-calendar-search.php without bracket encoding before do_shortcode runs, so a GET request triggers shortcodes on any page or post, enabling content injection and spoofing.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/joedolson/my-calendar
https://github.com/joedolson/my-calendar/blob/v3.8.10/src/my-calendar-search.php#L170
https://github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496
https://github.com/joedolson/my-calendar/releases/tag/v3.8.11
https://www.vulncheck.com/advisories/my-calendar-3.8.8-before-3.8.11-unauthenticated-shortcode-injection-via-mcs-parameter

Configurations

No configuration.

History

30 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 16:17

Updated : 2026-10-30 19:23

NVD link : CVE-2026-119714

Mitre link : CVE-2026-119714

CVE.ORG link : CVE-2026-119714

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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