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CVE-2026-119714medium6.9

My Calendar 3.8.8 before 3.8.11 Unauthenticated Shortcode Injection via mcs Parameter

Impact

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.

Source excerpt · VulnCheck

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

joedolson · VulnCheck

My Calendar - Accessible Event Manager

1 range
VulnCheck version evidence

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affected

3.8.8 → before 3.8.11

semver versions

unaffected

unknown

Other versions: unaffected

Original source description

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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-119714

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-94 ↗

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

VulnCheck

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

VulnCheck · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:joedolson:my_calendar:*:*:*:*:*:wordpress:*:*

From (inclusive): 3.8.8

Before: 3.8.11

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:joedolson:my_calendar:*:*:*:*:*:wordpress:*:*",
            "versionStartIncluding": "3.8.8",
            "versionEndExcluding": "3.8.11"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-10-30

What changed

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References

5 sources
github.com/joedolson/my-calendar/commit/de875c25d9651abb041b2dfe32f60a4320c66496
patchVulnCheck
github.com/joedolson/my-calendar
productVulnCheck
github.com/joedolson/my-calendar/releases/tag/v3.8.11
release-notesVulnCheck
github.com/joedolson/my-calendar/blob/v3.8.10/src/my-calendar-search.php
technical-descriptionVulnCheck
www.vulncheck.com/advisories/my-calendar-3.8.8-before-3.8.11-unauthenticated-shortcode-injection-via-mcs-parameter
third-party-advisoryVulnCheck