CVE-2023-1938: The WP Fastest Cache WordPress plugin before 1.1.5 does not have CSRF check in an AJAX action, and does not va

Q: How do I fix CVE-2023-1938?

wp fastest cache: upgrade to 1.1.5. Exact commands for each OS are on this page.

Q: Is CVE-2023-1938 being exploited?

CVE-2023-1938 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-1938 affect?

CVE-2023-1938 affects wp fastest cache. Severity is high (CVSS 8.8). The WP Fastest Cache WordPress plugin before 1.1.5 does not have CSRF check in an AJAX action, and does not validate user input before using it in the wp_remote_get() function, leading to a Blind SSRF issue

Q: How urgent is CVE-2023-1938?

Priority 60/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

This week

HIGH 8.8UPGRADE

CVE-2023-1938 is a high-severity flaw (CVSS 8.8) 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 WordPress plugin before 1.1.5 does not have CSRF check in an AJAX action, and does not validate user input before using it in the wp_remote_get() function, leading to a Blind SSRF issue

Why this priority

High severity
EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	8.5% (top 5%)
CISA exploited list	No
Published	2023-05-30
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wpfastestcache

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-05-30 08:15 UTCPublished CVE record published
2026-06-17 05:29 UTCUpdated Record last modified

wpfastestcache wp fastest cache UPGRADE

Affected: < 1.1.5

Fixed in: 1.1.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-fastest-cache || rpm -q wp-fastest-cache || wp-fastest-cache --version

2. UPGRADE to 1.1.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-fastest-cache

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-fastest-cache

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
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-2023-1938?

wp fastest cache: upgrade to 1.1.5. Exact commands for each OS are on this page.

Is CVE-2023-1938 being exploited?

CVE-2023-1938 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-2023-1938 affect?

CVE-2023-1938 affects wp fastest cache. Severity is high (CVSS 8.8). The WP Fastest Cache WordPress plugin before 1.1.5 does not have CSRF check in an AJAX action, and does not validate user input before using it in the wp_remote_get() function, leading to a Blind SSRF issue

How urgent is CVE-2023-1938?

Priority 60/100. High severity; EPSS top 5%: very likely to be exploited; Public exploit reference

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-6063 HIGH 7.5 UPGRADE The WP Fastest Cache WordPress plugin before 1.2.2 does not properly sanitise and escape a parameter before us
CVE-2023-1931 MEDIUM 4.3 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability
CVE-2023-1930 MEDIUM 4.3 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capabil
CVE-2023-1929 MEDIUM 4.3 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized data modification due to a missing cap
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

References

← Back to latest CVEs