How severe is CVE-2021-36847?

CVE-2021-36847 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-2021-36847 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36847?

CVE-2021-36847 affects Webba-booking Webba Booking. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36847?

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

When was CVE-2021-36847 published?

CVE-2021-36847 was published on 2022-08-22 and last updated on 2026-06-17.

CVE-2021-36847

CVE-2021-36847 is a medium-severity vulnerability in Webba-booking Webba Booking 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)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Webba-booking Webba Booking
Published: 2022-08-22
Last modified: 2026-06-17

Description

Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in WebbaPlugins Webba Booking plugin <= 4.2.21 at WordPress.

Frequently asked questions

What is CVE-2021-36847?: Authenticated (admin+) Stored Cross-Site Scripting (XSS) vulnerability in WebbaPlugins Webba Booking plugin <= 4.2.21 at WordPress.
How severe is CVE-2021-36847?: CVE-2021-36847 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-2021-36847 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36847?: CVE-2021-36847 affects Webba-booking Webba Booking. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36847?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36847 published?: CVE-2021-36847 was published on 2022-08-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webba-booking:webba_booking:*:*:*:*:*:wordpress:*:*

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