How severe is CVE-2021-24646?

CVE-2021-24646 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-2021-24646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24646?

CVE-2021-24646 affects Bookingholdings Booking.com Banner Creator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24646?

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

When was CVE-2021-24646 published?

CVE-2021-24646 was published on 2021-11-08 and last updated on 2026-06-17.

CVE-2021-24646

CVE-2021-24646 is a medium-severity vulnerability in Bookingholdings Booking.com Banner Creator 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% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Bookingholdings Booking.com Banner Creator
Published: 2021-11-08
Last modified: 2026-06-17

Description

The Booking.com Banner Creator WordPress plugin before 1.4.3 does not properly sanitize inputs when creating banners, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Frequently asked questions

What is CVE-2021-24646?: The Booking.com Banner Creator WordPress plugin before 1.4.3 does not properly sanitize inputs when creating banners, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed
How severe is CVE-2021-24646?: CVE-2021-24646 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-2021-24646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24646?: CVE-2021-24646 affects Bookingholdings Booking.com Banner Creator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24646 published?: CVE-2021-24646 was published on 2021-11-08 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/36aae14e-4bdf-4da6-a0f9-d71935105d45

Affected products (1)

cpe:2.3:a:bookingholdings:booking.com_banner_creator:*:*:*:*:*:wordpress:*:*

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →