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Vulnerability details

CVE-2026-13441

Metagauss EventPrime – Events Calendar

EventPrime <= 4.3.4.2 - Unauthenticated Stored Cross-Site Scripting via 'new_event_type_background_color' Parameter

CVSS 3.1
7.2High

Official description

The EventPrime – Events Calendar, Bookings and Tickets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'new_event_type_background_color' parameter in all versions up to, and including, 4.3.4.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the plugin's Guest Submissions setting (allow_submission_by_anonymous_user) to be enabled, which allows unauthenticated attackers to submit event types via the frontend form; when that setting is disabled, exploitation requires at minimum a subscriber-level authenticated account.

CVSS scores

ScoreVersionSourceVector
7.2High 3.1 CVEProject cvelistV5 (CNA) (Wordfence) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products

VendorProductVersionsSource
Metagauss EventPrime – Events Calendar, Bookings and Tickets v ≤ 4.3.4.2 CVEProject cvelistV5 (CNA)

References and advisories

8
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Details

Published
2026-07-09
Last updated
2026-07-09
State
Published
Assigner (CNA)
Wordfence

Exploit prediction (EPSS)

0.42%
Probability of exploitation in 30 days
37.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-79
    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')