Description
Unauthenticated Cross Site Scripting (XSS) in Quick Event Manager <= 9.17 versions.
Published: 2026-09-03
Score: 7.1 High
EPSS: < 1% Very Low
KEV: No
Impact: Client‑side code injection (Cross‑Site Scripting)
Action: Immediate Patch
AI Analysis

Impact

The Quick Event Manager plugin for WordPress contains an unauthenticated Cross‑Site Scripting flaw that allows an attacker to inject arbitrary scripts into pages generated by the plugin. This vulnerability permits the execution of attacker‑supplied code in the browser context of anyone who views the affected pages.

Affected Systems

The BrightVesselDevelopment Quick Event Manager plugin for WordPress, versions 9.17 and earlier, is susceptible to the flaw. Any WordPress site that continues to run an affected version is exposed.

Risk and Exploitability

The CVSS score of 7.1 indicates high severity. The EPSS score is not available and the flaw is not in CISA KEV, but the attack can be performed without authentication, simply by accessing the plugin’s pages with a crafted payload. This makes exploitation straightforward with standard XSS techniques.

Generated by OpenCVE AI on September 3, 2026 at 20:28 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Quick Event Manager plugin to version 9.18 or later to fix the XSS vulnerability.
  • If upgrading is not possible immediately, deactivate or uninstall the plugin to remove the attack surface.
  • As a temporary measure, apply a Web Application Firewall rule or enforce a strict Content‑Security‑Policy to block common XSS attacks on affected pages.

Generated by OpenCVE AI on September 3, 2026 at 20:28 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 04 Sep 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Brightvesseldev
Brightvesseldev quick Event Manager
Wordpress
Wordpress wordpress
Vendors & Products Brightvesseldev
Brightvesseldev quick Event Manager
Wordpress
Wordpress wordpress

Fri, 04 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 03 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
Description Unauthenticated Cross Site Scripting (XSS) in Quick Event Manager <= 9.17 versions.
Title WordPress Quick Event Manager plugin <= 9.17 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}

Subscriptions

Brightvesseldev Quick Event Manager
Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Patchstack

Published:

Updated: 2026-09-04T13:42:26.012Z

Reserved: 2026-09-02T12:42:39.993Z

Link: CVE-2026-84848

cve-icon Vulnrichment

Updated: 2026-09-04T13:26:13.162Z

cve-icon NVD

Status : Deferred

Published: 2026-09-03T17:17:29.770

Modified: 2026-09-04T14:17:21.130

Link: CVE-2026-84848

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-04T15:22:32Z

Weaknesses
  • CWE-79

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