CVE-2022-1390
Published: April 11, 2026
Official Description
The Admin Word Count Column WordPress plugin through 2.2 does not validate the path parameter given to readfile(), which could allow unauthenticated attackers to read arbitrary files on server running old version of PHP susceptible to the null byte technique. This could also lead to RCE by using a Phar Deserialization technique
Risk Analysis
This vulnerability in the Admin Word Count Column WordPress plugin allows unauthenticated attackers to read arbitrary files on the server. If the server is running an old version of PHP, this could also lead to remote code execution. The confirmed exploitation in the wild makes this a critical vulnerability for affected systems.
Active exploitation of this vulnerability has been observed in the wild. The flaw can be exploited remotely, particularly on systems with older PHP versions.
Update the Admin Word Count Column WordPress plugin to a version beyond 2.2. Ensure your PHP environment is up-to-date to mitigate risks associated with null byte techniques and Phar Deserialization.
Technical Analysis
CVE-2022-1390 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CISA has added CVE-2022-1390 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.
Affected Vendors & Products
Exploit & PoC Resources
Quick Facts
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2022-1390 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
- !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
- !Active exploitation confirmed — treat as P1