CVE-2021-24646: The Booking.com Banner Creator WordPress plugin before 1.4.3 does not properly sanitize inputs when creating b

Q: How do I fix CVE-2021-24646?

booking.com banner creator: upgrade to 1.4.3. Exact commands for each OS are on this page.

Q: Is CVE-2021-24646 being exploited?

CVE-2021-24646 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24646 affect?

CVE-2021-24646 affects booking.com banner creator. Severity is medium (CVSS 4.8). 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

Q: How urgent is CVE-2021-24646?

Priority 34/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2021-24646 is a medium-severity flaw (CVSS 4.8) affecting booking.com banner creator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-11-08
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: bookingholdings

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-11-08 18:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

bookingholdings booking.com banner creator UPGRADE

Affected: < 1.4.3

Fixed in: 1.4.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy booking.com-banner-creator || rpm -q booking.com-banner-creator || booking.com-banner-creator --version

2. UPGRADE to 1.4.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade booking.com-banner-creator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade booking.com-banner-creator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24646?

booking.com banner creator: upgrade to 1.4.3. Exact commands for each OS are on this page.

Is CVE-2021-24646 being exploited?

CVE-2021-24646 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24646 affect?

CVE-2021-24646 affects booking.com banner creator. Severity is medium (CVSS 4.8). 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

How urgent is CVE-2021-24646?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

← Back to latest CVEs