What is the CVSS score of EUVD-2026-20191?

EUVD-2026-20191 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Rsvp And Event Management EUVD-2026-20191

Q: Which versions of Rsvp And Event Management are affected by EUVD-2026-20191?

Information disclosure in WP Chill RSVP and Event Management plugin versions up to 2.7.16 exposes sensitive system data to unauthenticated remote attackers via unprotected endpoints.

| CVE-2026-39536 MEDIUM

Exposure of Sensitive System Information to an Unauthorized Control Sphere (CWE-497)

2026-04-08 Patchstack

Information Disclosure Rsvp And Event Management

5.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Apr 15, 2026 - 12:41 vuln.today

CVSS changed

Apr 13, 2026 - 16:22 NVD

5.3 (MEDIUM)

EUVD ID Assigned

Apr 08, 2026 - 08:45 euvd

EUVD-2026-20191

CVE Published

Apr 08, 2026 - 08:30 nvd

N/A

DescriptionCVE.org

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in WP Chill RSVP and Event Management rsvp allows Retrieve Embedded Sensitive Data.This issue affects RSVP and Event Management: from n/a through <= 2.7.16.

AnalysisAI

Information disclosure in WP Chill RSVP and Event Management plugin versions up to 2.7.16 exposes sensitive system data to unauthenticated remote attackers via unprotected endpoints. The vulnerability allows retrieval of embedded sensitive information without authentication or user interaction, affecting WordPress sites using the affected plugin versions. With EPSS scoring of 0.02% and no public exploit code identified, real-world exploitation risk is minimal despite the network-accessible attack vector.

Technical ContextAI

The vulnerability stems from improper access controls on sensitive data endpoints within the RSVP and Event Management WordPress plugin. CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere) indicates the plugin fails to properly restrict access to protected resources, allowing unauthenticated actors to query endpoints that return sensitive system or application metadata. This is a common pattern in WordPress plugins where REST API endpoints or internal AJAX handlers lack proper capability checks, permission verification, or nonce validation. The affected product (cpe:2.3:a:wp_chill:rsvp_and_event_management:*:*:*:*:*:*:*:*) is a WordPress plugin distributed via the WordPress plugin repository.

RemediationAI

Update WP Chill RSVP and Event Management plugin to a version newer than 2.7.16; consult the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/rsvp/vulnerability/wordpress-rsvp-and-event-management-plugin-2-7-16-sensitive-data-exposure-vulnerability?_s_id=cve for the specific patched version release. If an immediate update is not feasible, disable the plugin or restrict network access to affected endpoints via Web Application Firewall rules until a patch is available. WordPress administrators should verify that any sensitive data (such as user attendee lists or event metadata) exposed through the plugin has not been compromised.