PatchTheCVECVE-2023-1929: The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing cap
CVE-2023-1929 is a medium-severity flaw (CVSS 4.3) affecting wp fastest cache. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check on the wpfc_purgecache_varnish_callback function in versions up to, and including, 1.1.2. This makes it possible for authenticated attackers with subscriber-level access to purge the varnish cache.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 67%) |
| CISA exploited list | No |
| Weakness | CWE-862 |
| Published | 2023-04-06 |
| 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-2023-1929?
wp fastest cache: upgrade to newer than 1.1.2. Exact commands for each OS are on this page.
Is CVE-2023-1929 being exploited?
CVE-2023-1929 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-2023-1929 affect?
CVE-2023-1929 affects wp fastest cache. Severity is medium (CVSS 4.3). The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check on the wpfc_purgecache_varnish_callback function in versions up to, and including, 1.1.2. This makes it possible for
How urgent is CVE-2023-1929?
Priority 23/100. No elevated risk signals yet.
Software pages
WordPress vulnerabilities · Varnish vulnerabilities
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- CVE-2023-1928 MEDIUM 4.3 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing cap