WP Fastest Cache – WordPress Cache Plugin vulnerabilities
Plugin slug wp-fastest-cache · 39 known vulnerabilities · latest disclosed 2026-11-02 · WordPress.org page
Every listed vulnerability has a fix. Version 1.5.4 or later is not affected by any of them. If your site runs an older version, update it.
14 of 39 rated high or critical (CVSS 7 or more).
Known vulnerabilities in WP Fastest Cache – WordPress Cache Plugin
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 5.9 | <= 1.5.3 | 1.5.4 | CVE-2026-111464 | 2026-11-02 | Advisory |
| Medium 6.1 | 0.8.7.7 to 1.5.0 | 1.5.1 | CVE-2026-74916 | 2026-08-26 | Advisory |
| High 7.2 | <= 1.5.0 | 1.5.1 | CVE-2026-19760 | 2026-08-25 | Advisory |
| High 7.2 | <= 1.5.0 | 1.5.1 | CVE-2026-74932 | 2026-08-25 | Advisory |
| Medium 4.3 | <= 1.4.0 | 1.4.1 | CVE-2025-10476 | 2025-11-26 | Advisory |
| High 7.2 | <= 1.2.6 | 1.2.7 | CVE-2024-4347 | 2024-05-10 | Advisory |
| Critical 9.8 | <= 1.2.1 | 1.2.2 | CVE-2023-6063 | 2023-11-13 | Advisory |
| Medium 6.5 | <= 1.1.4 | 1.1.5 | CVE-2023-1938 | 2023-05-02 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1919 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1925 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1921 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1918 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1929 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1923 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1927 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1928 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1922 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1924 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1375 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1931 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1926 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1930 | 2023-04-06 | Advisory |
| Medium 4.3 | <= 1.1.2 | 1.1.3 | CVE-2023-1920 | 2023-04-06 | Advisory |
| Medium 6.5 | <= 0.8.9.0 | 0.8.9.1 | CVE-2019-6726 | 2022-01-24 | Advisory |
| High 8.8 | < 0.9.5 | 0.9.5 | CVE-2021-24870 | 2021-10-14 | Advisory |
| High 8.8 | < 0.9.5 | 0.9.5 | CVE-2021-24869 | 2021-10-14 | Advisory |
| Medium 6.5 | < 0.9.1.7 | 0.9.1.7 | CVE-2021-20714 | 2021-04-27 | Advisory |
| High 8 | < 0.9.0.3 | 0.9.0.3 | CVE-2020-36836 | 2020-02-05 | Advisory |
| Critical 9.1 | <= 0.8.9.5 | 0.8.9.6 | CVE-2019-13635 | 2019-07-28 | Advisory |
| High 8.8 | <= 0.8.8.5 | 0.8.8.6 | CVE-2018-17584 | 2018-10-09 | Advisory |
| Medium 6.1 | <= 0.8.8.5 | 0.8.8.6 | CVE-2018-17586 | 2018-10-09 | Advisory |
| Medium 6.1 | <= 0.8.8.5 | 0.8.8.6 | CVE-2018-17585 | 2018-10-09 | Advisory |
| Medium 6.1 | <= 0.8.8.5 | 0.8.8.6 | CVE-2018-17583 | 2018-10-09 | Advisory |
| High 7.4 | <= 0.8.7.4 | 0.8.7.5 | none | 2018-02-22 | Advisory |
| High 8.8 | <= 0.8.5.9 | 0.8.6.0 | none | 2016-07-13 | Advisory |
| High 8.8 | <= 0.8.5.7 | 0.8.5.8 | none | 2016-05-24 | Advisory |
| Medium 4.9 | <= 0.8.5.7 | 0.8.5.8 | none | 2016-05-23 | Advisory |
| Critical 9.8 | < 0.8.4.9 | 0.8.4.9 | CVE-2015-9316 | 2015-11-11 | Advisory |
| High 8.8 | < 0.8.3.5 | 0.8.3.5 | CVE-2015-4089 | 2015-05-26 | Advisory |
Check if a site is affected
Enter a site address to see which version of WP Fastest Cache – WordPress Cache Plugin and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the WP Fastest Cache – WordPress Cache Plugin plugin safe to use?
All 39 known issues are fixed in current versions (1.5.4 or later). Keeping it updated is what matters.
How do I check which version of WP Fastest Cache – WordPress Cache Plugin my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.