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Vulnerabilities

Vulnerability · CVE-2023-1929

WP Fastest Cache plugin for WordPress Unauthorised Data Modification Vulnerability

Published Apr 6, 2023 · catalog updated Apr 6, 2023 · WP Fastest Cache plugin

Patch now

CVE-2023-1929 is in the CISA known-exploited catalog. Confirm WP Fastest Cache plugin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (WP Fastest Cache plugin).
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.39%
Remediation
Remediation guidance
Affected products
stated wp_fastest_cache · vendor wpfastestcache wp_fastest_cache

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated wp_fastest_cache<= 1.1.2
  • vendor wpfastestcache wp_fastest_cacheversion unspecified

How to fix CVE-2023-1929

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2023-1929 is in the CISA known-exploited catalog. Confirm WP Fastest Cache plugin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with <= 1.1.2. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.39%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 6, 2023 · VulnCheck KEV

    Detected

    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.

  2. Apr 6, 2023 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2023-1929

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-1929

    30-day exploitation probability 0.4%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2023-1929

    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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.