How severe is CVE-2021-24232?

CVE-2021-24232 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24232 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24232?

CVE-2021-24232 affects Elbtide Advanced Booking Calendar. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24232?

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

When was CVE-2021-24232 published?

CVE-2021-24232 was published on 2021-04-22 and last updated on 2026-06-17.

CVE-2021-24232

CVE-2021-24232 is a medium-severity vulnerability in Elbtide Advanced Booking Calendar with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Elbtide Advanced Booking Calendar
Published: 2021-04-22
Last modified: 2026-06-17

Description

The Advanced Booking Calendar WordPress plugin before 1.6.8 does not sanitise the license error message when output in the settings page, leading to an authenticated reflected Cross-Site Scripting issue

Frequently asked questions

What is CVE-2021-24232?: The Advanced Booking Calendar WordPress plugin before 1.6.8 does not sanitise the license error message when output in the settings page, leading to an authenticated reflected Cross-Site Scripting issue
How severe is CVE-2021-24232?: CVE-2021-24232 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24232 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24232?: CVE-2021-24232 affects Elbtide Advanced Booking Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24232?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24232 published?: CVE-2021-24232 was published on 2021-04-22 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/f06629b5-8b15-48eb-a7a7-78b693e06b71

Affected products (1)

cpe:2.3:a:elbtide:advanced_booking_calendar:*:*:*:*:*:wordpress:*:*

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