CVE-2025-31883

WordPress WebinarPress plugin <= 1.33.28 - Cross Site Scripting (XSS) vulnerability

5.9 Medium

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebinarSystem WebinarPress wp-webinarsystem allows Stored XSS.This issue affects WebinarPress: from n/a through <= 1.33.28.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.24%Up 0.2 points since Apr 2, 2025

What each source reports

CVE List Score used 5.9

WordPress WebinarPress plugin <= 1.33.28 - Cross Site Scripting (XSS) vulnerability

Record: CVE-2025-31883
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2025-9152 5.9

Record: EUVD-2025-9152
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Updated: 2026-11-02

GitHub AdvisoriesGHSA-jpj3-4vjw-5jmq 5.9

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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPWebinarSystem WebinarPress allows Stored XSS. This issue affects WebinarPress: from n/a through 1.33.27.

Record: GHSA-jpj3-4vjw-5jmq
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Weakness: CWE-79
Updated: 2026-11-02

NVD 5.9

Record: CVE-2025-31883
CVSS 3.1: 5.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
CVSS 3.1: 4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
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-2025-31883 is a medium vulnerability (CVSS 5.9) in Webinarpress, published April 1, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 14th percentile. No source names a fixed version.