CVE-2021-24614: The Book appointment online WordPress plugin before 1.39 does not sanitise or escape Service Prices before out

Q: How do I fix CVE-2021-24614?

book appointment online: upgrade to 1.39. Exact commands for each OS are on this page.

Q: Is CVE-2021-24614 being exploited?

CVE-2021-24614 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-2021-24614 affect?

CVE-2021-24614 affects book appointment online. Severity is medium (CVSS 4.8). The Book appointment online WordPress plugin before 1.39 does not sanitise or escape Service Prices before outputting it in the List, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_ht

Q: How urgent is CVE-2021-24614?

Priority 34/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2021-24614 is a medium-severity flaw (CVSS 4.8) affecting book appointment online. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Book appointment online WordPress plugin before 1.39 does not sanitise or escape Service Prices before outputting it in the List, 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	2021-09-13
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: oz-plugin

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

Am I affected?

Timeline

2021-09-13 18:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

oz-plugin book appointment online UPGRADE

Affected: < 1.39

Fixed in: 1.39

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy book-appointment-online || rpm -q book-appointment-online || book-appointment-online --version

2. UPGRADE to 1.39 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade book-appointment-online

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade book-appointment-online

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-2021-24614?

book appointment online: upgrade to 1.39. Exact commands for each OS are on this page.

Is CVE-2021-24614 being exploited?

CVE-2021-24614 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-2021-24614 affect?

CVE-2021-24614 affects book appointment online. Severity is medium (CVSS 4.8). The Book appointment online WordPress plugin before 1.39 does not sanitise or escape Service Prices before outputting it in the List, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_ht

How urgent is CVE-2021-24614?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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