PatchTheCVECVE-2021-4450: The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, a
CVE-2021-4450 is a high-severity flaw (CVSS 8.8) affecting post grid. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers with contributor-level permissions and above to append additional SQL queries into already existing queries that can be used to extract sensitive
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 58%) |
| CISA exploited list | No |
| Weakness | CWE-89 |
| Published | 2024-10-16 |
| 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-2021-4450?
post grid: upgrade to newer than 2.1.12. Exact commands for each OS are on this page.
Is CVE-2021-4450 being exploited?
CVE-2021-4450 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-2021-4450 affect?
CVE-2021-4450 affects post grid. Severity is high (CVSS 8.8). The Post Grid plugin for WordPress is vulnerable to blind SQL Injection via post metadata in versions up to, and including, 2.1.12 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existin
How urgent is CVE-2021-4450?
Priority 41/100. High severity
Software pages
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