How severe is CVE-2021-24429?

CVE-2021-24429 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24429 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24429?

CVE-2021-24429 affects Salonbookingsystem Salon Booking System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24429?

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

When was CVE-2021-24429 published?

CVE-2021-24429 was published on 2021-07-12 and last updated on 2026-06-17.

CVE-2021-24429

CVE-2021-24429 is a medium-severity vulnerability in Salonbookingsystem Salon Booking System with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Salonbookingsystem Salon Booking System
Published: 2021-07-12
Last modified: 2026-06-17

Description

The Salon booking system WordPress plugin before 6.3.1 does not properly sanitise and escape the First Name field when booking an appointment, allowing low privilege users such as subscriber to set JavaScript in them, leading to a Stored Cross-Site Scripting (XSS) vulnerability. The Payload will then be triggered when an admin visits the "Calendar" page and the malicious script is executed in the admin context.

Frequently asked questions

What is CVE-2021-24429?: The Salon booking system WordPress plugin before 6.3.1 does not properly sanitise and escape the First Name field when booking an appointment, allowing low privilege users such as subscriber to set JavaScript in them, leading to a Stored Cross-Site Scripting (XSS) vulnerability. The Payload will then be triggered when an admin visits the "Calendar" page and the malicious script is executed in the admin context.
How severe is CVE-2021-24429?: CVE-2021-24429 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24429 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24429?: CVE-2021-24429 affects Salonbookingsystem Salon Booking System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24429?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24429 published?: CVE-2021-24429 was published on 2021-07-12 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/e922b788-7da5-43b4-9b05-839c8610252a

Affected products (1)

cpe:2.3:a:salonbookingsystem:salon_booking_system:*:*:*:*:*:wordpress:*:*

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