EUVD-2026-85038
GHSA-xjv5-f9gc-p6v3
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessIdentify site running The Events Calendar
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ExploitQuery public REST API endpoint
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ExecutionServer embeds unpublished linked records without status check
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ImpactRead draft/pending record contents
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK
2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | No special conditions - remote unauthenticated exploitation against default configurations of The Events Calendar (versions 4.5 through before 6.17.5) that expose the affected public REST API responses. The only real limiter is impact scope: the disclosure is confined to the stored contents of linked records in a non-published post status (drafts/pending/private events and their venue/organizer details), so value to an attacker depends on whether the target site has staged sensitive unpublished event data. Sites upgraded to 6.17.5 or later are not affected. |
| Impact | This is a modest-severity, high-reach information disclosure flaw. The CVSS 5.3 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) accurately reflects an unauthenticated, remote, low-complexity read primitive with limited confidentiality impact only - no integrity or availability effect. There is no EPSS score, no CISA KEV listing, and no public exploit code referenced in the input, so exploitation status is: no public exploit identified at time of analysis. The confidentiality impact is genuinely C:L rather than C:H because the leak is scoped to the stored contents of unpublished/draft/pending calendar records (event details) rather than credentials, PII dumps, or system secrets - its value depends on what a given site staged privately. Signals are consistent (moderate CVSS, no KEV, no EPSS/POC), pointing to a real-but-low-urgency issue rather than a fire drill: patch on normal cycle. The one amplifier is the affected product's enormous install base, which raises aggregate exposure even though per-incident impact is low. |
| Exploit ScenarioDerived | An unauthenticated attacker sends crafted requests to the site's public WordPress REST API endpoints exposed by The Events Calendar and receives embedded details of linked records (e.g., draft or never-published events/venues/organizers) whose post status should have excluded them from public output. No authentication, user interaction, or special configuration is required (AV:N/AC:L/PR:N/UI:N). No public proof-of-concept is referenced in the available data. |
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Alert meAnalysisAIv1 – Sep 23, 2026
Unauthenticated information disclosure in The Events Calendar WordPress plugin (versions 4.5 through before 6.17.5) allows remote attackers to read the stored details of linked records-such as draft, pending, or private events and their associated venues/organizers-that were never intended to be public. The flaw stems from missing post-status checks when embedding linked record data into a public REST API response. No public exploit code has been identified at time of analysis, and the vendor has released a patch in version 6.17.5.
RemediationAI
Upgrade The Events Calendar plugin to version 6.17.5 or later, which contains the vendor-released patch. This is the primary and most effective remediation. If an immediate upgrade is not possible, consider temporarily disabling the plugin or restricting access to the plugin's public REST API endpoints-for example, by using a security plugin or custom code to require authentication for requests to the affected routes. However, these workarounds may break legitimate functionality that relies on unauthenticated REST access (e.g., calendar displays, third-party integrations). Additionally, review any unpublished events, venues, or organizers for sensitive information and consider removing or publishing them as appropriate. For more details, refer to the WPScan advisory at https://wpscan.com/vulnerability/0f34a90e-3d8b-4a87-a2ed-fe4d2c481732/ or the NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-84741.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
The Events Calendar is a widely used WordPress plugin that adds event management and exposes event-related data through WordPress REST API endpoints. The vulnerability (CWE-200) occurs because the plugin fails to verify the post_status of linked records (e.g., events, venues, organizers) before including their stored details in responses to unauthenticated REST API requests. This allows retrieval of content from posts that are in non-public statuses such as draft, pending, or private. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N) confirms remote, unauthenticated exploitation with low confidentiality impact only, as the disclosure is limited to the contents of those unpublished linked records. Affected versions are 4.5 through before 6.17.5; the fix is in 6.17.5. No public exploit code is known.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Unauthenticated remote REST read of unpublished record contents with no user interaction gives AV:N/AC:L/PR:N/UI:N and C:L; no integrity or availability effect.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
4DescriptionCVE.org
The Events Calendar WordPress plugin before 6.17.5 does not check the post status of linked records before embedding their stored details into a public REST API response, allowing unauthenticated users to read the contents of records that have never been published.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
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