PatchTheCVECVE-2022-21643: USOC is an open source CMS with a focus on simplicity
CVE-2022-21643 is a critical-severity flaw (CVSS 10.0) affecting useful simple open-source cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
USOC is an open source CMS with a focus on simplicity. In affected versions USOC allows for SQL injection via register.php. In particular usernames, email addresses, and passwords provided by the user were not sanitized and were used directly to construct a sql statement. Users are advised to upgrade as soon as possible. There are not workarounds for this issue.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.2% (top 31%) |
| CISA exploited list | No |
| Weakness | CWE-89 |
| Published | 2022-01-04 |
| 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-2022-21643?
useful simple open-source cms: upgrade to pb2.4bfx2. Exact commands for each OS are on this page.
Is CVE-2022-21643 being exploited?
CVE-2022-21643 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-2022-21643 affect?
CVE-2022-21643 affects useful simple open-source cms. Severity is critical (CVSS 10.0). USOC is an open source CMS with a focus on simplicity. In affected versions USOC allows for SQL injection via register.php. In particular usernames, email addresses, and passwords provided by the user were not sanitized and were used direct
How urgent is CVE-2022-21643?
Priority 57/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2022-21666 HIGH 7.2 UPGRADE Useful Simple Open-Source CMS (USOC) is a content management system (CMS) for programmers
- CVE-2022-21644 CRITICAL 9.1 UPGRADE USOC is an open source CMS with a focus on simplicity