CVE-2021-24418

Smooth Scroll Page Up/Down Buttons <= 1.4 - Authenticated Stored XSS via psb_positioning

4.8 Medium

The Smooth Scroll Page Up/Down Buttons WordPress plugin through 1.4 does not properly sanitise and validate its psb_positioning settings, allowing high privilege users such as admin to set an XSS payload in it, which will be executed in all pages of the blog

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: None

Exploit likelihood

0.63%Unchanged since Jul 13, 2021

What each source reports

NVD Score used 4.8

Record: CVE-2021-24418
CVSS 3.1: 4.8 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0: 3.5 LowAV:N/AC:M/Au:S/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Smooth Scroll Page Up/Down Buttons <= 1.4 - Authenticated Stored XSS via psb_positioning

Record: CVE-2021-24418
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2021-11330 No score

Record: EUVD-2021-11330
Updated: 2026-11-03

GitHub AdvisoriesGHSA-hv4v-qq65-xmfx No score

The Smooth Scroll Page Up/Down Buttons WordPress plugin through 1.4 does not properly sanitise...

Record: GHSA-hv4v-qq65-xmfx
Weakness: CWE-79
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

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

In short

CVE-2021-24418 is a medium vulnerability (CVSS 4.8) in Mark Senff Smooth Scroll Page Up/down Buttons, published July 12, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.63%, the 50th percentile. No source names a fixed version.