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Back to active CVEs
Medium · CVSS 5.4CVE-2026-11821

Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API EndpointCVE-2026-11821

Answer in brief

CVE-2026-11821 records a Medium severity (CVSS 5.4) vulnerability in Eventin <= 4.1.17 - Missing Authorization to Authenticated (Subscriber+) Notification Flow Management via notification-flow REST API Endpoint. The current sources do not mark it as known exploited. The current feed maps arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce (generic), arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 9, 2026Updated Sep 9, 2026Source checked Oct 24, 2026First seen by HOL Sep 9, 2026Material review Sep 9, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.4
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Not reported

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce (generic), arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommercegeneric>=0 <=4.1.17Not reported
arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommercegeneric0Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce, arraytics/Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce.
  2. 2Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

  1. Published upstream

    Sep 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 9, 2026

Sources and claim methodology

  • Source referenceplugins.trac.wordpress.org
  • Source referenceplugins.trac.wordpress.org
  • Source referenceplugins.trac.wordpress.org
  • Source referencewordfence.com
Upstream source description

The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.1.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to view, create, update, clone, and delete notification flow event automation workflows that should be restricted to administrators.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress SureDash plugin <= 1.12.2 - Broken Access Control vulnerabilityAlso CWE-862
  • WordPress UPI QR Code Payment Gateway for WooCommerce plugin <= 1.6.3 - Broken Access Control vulnerabilityAlso CWE-862
  • WordPress WpEvently plugin <= 5.7.8 - Broken Access Control vulnerabilityAlso CWE-862
  • WordPress WP Social Feed Gallery plugin <= 5.0.13 - Broken Access Control vulnerabilityAlso CWE-862
  • Broken access control in JiraControllerAlso CWE-862
  • DaybydayCRM through 2.2.1 Missing Authorization via ProjectsController updateAssignAlso CWE-862

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-862
Source
CVE List V5
Source checked
Oct 24, 2026
References
4 linked sources
Open source record