CVE-2025-23868

WordPress Chess Tempo Viewer plugin <= 0.9.5 - Stored Cross Site Scripting (XSS) vulnerability

6.5 Medium

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in mliebelt Chess Tempo Viewer chesstempoviewer allows Stored XSS.This issue affects Chess Tempo Viewer: from n/a through <= 0.9.5.

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

0.38%Up 0.3 points since Jan 17, 2025

What each source reports

CVE List Score used 6.5

WordPress Chess Tempo Viewer plugin <= 0.9.5 - Stored Cross Site Scripting (XSS) vulnerability

Record: CVE-2025-23868
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-2025-3489 6.5

Record: EUVD-2025-3489
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-mmw2-hgh6-x39h 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 Markus Liebelt Chess Tempo Viewer allows Stored XSS.This issue affects Chess Tempo Viewer: from n/a through 0.9.5.

Record: GHSA-mmw2-hgh6-x39h
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-2025-23868
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

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-2025-23868 is a medium vulnerability (CVSS 6.5) in Markus Liebelt Chess Tempo Viewer, published January 16, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 32nd percentile. No source names a fixed version.