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Eventin WordPress Plugin CVE-2026-11821

| EUVDEUVD-2026-74625 MEDIUM
Missing Authorization (CWE-862)
2026-09-09 Wordfence GHSA-h92m-ghpm-pr23
5.4
CVSS 3.1 · Vendor: Wordfence
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Severity by source

Vendor (Wordfence) PRIMARY
5.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
vuln.today AI
5.4 MEDIUM

Subscriber-level authentication required (PR:L); only workflow config exposed (C:L/I:L); no availability impact or scope change applies.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Metadata Corrected
Sep 09, 2026 - 07:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 09, 2026 - 07:20 vuln.today
CVE Published
Sep 09, 2026 - 04:28 nvd
MEDIUM 5.4

DescriptionCVE.org

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.

AnalysisAI

Authorization bypass in Eventin - Event Calendar plugin for WordPress (all versions ≤4.1.17) allows authenticated subscriber-level users to fully manage notification flow automation workflows restricted to administrators. Exploitation requires only a low-privilege WordPress account, enabling unauthorized read, create, update, clone, and delete operations on event automation configurations. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid WordPress account with at minimum subscriber-level access on the target site. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 5.4 (Medium) accurately reflects the constrained impact - an attacker can only manipulate notification automation workflows, not achieve code execution or access sensitive site data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade the Eventin plugin to version 4.1.18 or later, which contains a corrected FlowAPI.php that enforces proper capability checks before allowing workflow operations. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-11821 vulnerability details – vuln.today

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