PatchTheCVECVE-2021-24538: The Current Book WordPress plugin through 1.0.1 does not sanitize user input when an authenticated user adds A
CVE-2021-24538 is a medium-severity flaw (CVSS 5.4) affecting current book. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Current Book WordPress plugin through 1.0.1 does not sanitize user input when an authenticated user adds Author or Book Title, then does not escape these values when outputting to the browser leading to an Authenticated Stored XSS 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 | 2021-08-16 |
| 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-2021-24538?
current book: upgrade to newer than 1.0.1. Exact commands for each OS are on this page.
Is CVE-2021-24538 being exploited?
CVE-2021-24538 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-2021-24538 affect?
CVE-2021-24538 affects current book. Severity is medium (CVSS 5.4). The Current Book WordPress plugin through 1.0.1 does not sanitize user input when an authenticated user adds Author or Book Title, then does not escape these values when outputting to the browser leading to an Authenticated Stored XSS Cross
How urgent is CVE-2021-24538?
Priority 36/100. Public exploit reference