PatchTheCVECVE-2021-24593: The Business Hours Indicator WordPress plugin before 2.3.5 does not sanitise or escape its 'Now closed message
CVE-2021-24593 is a medium-severity flaw (CVSS 5.4) affecting business hours indicator. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Business Hours Indicator WordPress plugin before 2.3.5 does not sanitise or escape its 'Now closed message" setting when outputting it in the backend and frontend, leading to an Authenticated Stored Cross-Site Scripting issue
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.4 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | Required |
| EPSS exploit chance | 0.6% (top 50%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2021-08-30 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
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-2021-24593?
business hours indicator: upgrade to 2.3.5. Exact commands for each OS are on this page.
Is CVE-2021-24593 being exploited?
CVE-2021-24593 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-2021-24593 affect?
CVE-2021-24593 affects business hours indicator. Severity is medium (CVSS 5.4). The Business Hours Indicator WordPress plugin before 2.3.5 does not sanitise or escape its 'Now closed message" setting when outputting it in the backend and frontend, leading to an Authenticated Stored Cross-Site Scripting issue
How urgent is CVE-2021-24593?
Priority 36/100. Public exploit reference