How severe is CVE-2021-24331?

CVE-2021-24331 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24331?

CVE-2021-24331 affects Smooth Scroll Page Up/down Buttons Project Smooth Scroll Page Up/down Buttons. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24331 published?

CVE-2021-24331 was published on 2021-06-01 and last updated on 2026-06-17.

CVE-2021-24331

CVE-2021-24331 is a medium-severity vulnerability in Smooth Scroll Page Up/down Buttons Project Smooth Scroll Page Up/down Buttons with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Smooth Scroll Page Up/down Buttons Project Smooth Scroll Page Up/down Buttons
Published: 2021-06-01
Last modified: 2026-06-17

Description

The Smooth Scroll Page Up/Down Buttons WordPress plugin before 1.4 did not properly sanitise and validate its settings, such as psb_distance, psb_buttonsize, psb_speed, only validating them client side. This could allow high privilege users (such as admin) to set XSS payloads in them

Frequently asked questions

What is CVE-2021-24331?: The Smooth Scroll Page Up/Down Buttons WordPress plugin before 1.4 did not properly sanitise and validate its settings, such as psb_distance, psb_buttonsize, psb_speed, only validating them client side. This could allow high privilege users (such as admin) to set XSS payloads in them
How severe is CVE-2021-24331?: CVE-2021-24331 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24331?: CVE-2021-24331 affects Smooth Scroll Page Up/down Buttons Project Smooth Scroll Page Up/down Buttons. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24331 published?: CVE-2021-24331 was published on 2021-06-01 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:smooth_scroll_page_up\/down_buttons_project:smooth_scroll_page_up\/down_buttons:*:*:*:*:*:wordpress:*:*

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