CVE-2025-39540

WordPress WP Flipclock plugin <= 1.9.1 - Cross Site Scripting (XSS) vulnerability

6.5 Medium

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rhys Wynne WP Flipclock wp-flipclock allows DOM-Based XSS.This issue affects WP Flipclock: from n/a through <= 1.9.1.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.37%Up 0.3 points since Apr 17, 2025

What each source reports

CVE List Score used 6.5

WordPress WP Flipclock plugin <= 1.9.1 - Cross Site Scripting (XSS) vulnerability

Record: CVE-2025-39540
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2025-11323 6.5

Record: EUVD-2025-11323
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xhq9-9h5f-jcjw 6.5

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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rhys Wynne WP Flipclock allows DOM-Based XSS. This issue affects WP Flipclock: from n/a through 1.9.

Record: GHSA-xhq9-9h5f-jcjw
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.5

Record: CVE-2025-39540
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

Affected products

rhys wynne wp flipclock

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-39540 is a medium vulnerability (CVSS 6.5) in Rhys Wynne Wp Flipclock, published April 16, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 30th percentile. No source names a fixed version.