CVE-2023-1931
Published: April 11, 2026
Official Description
The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability check on the deleteCssAndJsCacheToolbar function in versions up to, and including, 1.1.2. This makes it possible for authenticated attackers with subscriber-level access to perform cache deletion.
Risk Analysis
This vulnerability in the WP Fastest Cache plugin allows authenticated attackers with subscriber-level access to delete CSS and JS caches due to a missing capability check. The flaw is confirmed to be actively exploited, indicating its urgency.
Active exploitation of this vulnerability has been observed in the wild. Attackers can remotely exploit this flaw if they have subscriber-level access.
Update the WP Fastest Cache plugin to a version beyond 1.1.2. Ensure all WordPress plugins are kept up-to-date and review user permissions regularly.
Technical Analysis
CVE-2023-1931 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-2023-1931 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-2023-1931 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