CVE-2023-6063: The WP Fastest Cache WordPress plugin before 1.2.2 does not properly sanitise and escape a parameter before us

Q: How do I fix CVE-2023-6063?

wp fastest cache: upgrade to 1.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2023-6063 being exploited?

CVE-2023-6063 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-2023-6063 affect?

CVE-2023-6063 affects wp fastest cache. Severity is high (CVSS 7.5). The WP Fastest Cache WordPress plugin before 1.2.2 does not properly sanitise and escape a parameter before using it in a SQL statement, leading to a SQL injection exploitable by unauthenticated users.

Q: How urgent is CVE-2023-6063?

Priority 61/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2023-6063 is a high-severity flaw (CVSS 7.5) 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 1.2.2 does not properly sanitise and escape a parameter before using it in a SQL statement, leading to a SQL injection exploitable by unauthenticated users.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	73.7% (top 1%)
CISA exploited list	No
Weakness	CWE-89
Published	2023-12-04
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

2023-12-04 22:15 UTCPublished CVE record published
2026-06-17 06:49 UTCUpdated Record last modified

wpfastestcache wp fastest cache UPGRADE

Affected: < 1.2.2

Fixed in: 1.2.2

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 1.2.2 (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.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Metasploit: WordPress WP Fastest Cache Unauthenticated SQLi (CVE-2023-6063)
Nuclei scan template: WP Fastest Cache 1.2.2 - SQL Injection

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-2023-6063?

wp fastest cache: upgrade to 1.2.2. Exact commands for each OS are on this page.

Is CVE-2023-6063 being exploited?

CVE-2023-6063 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-2023-6063 affect?

CVE-2023-6063 affects wp fastest cache. Severity is high (CVSS 7.5). The WP Fastest Cache WordPress plugin before 1.2.2 does not properly sanitise and escape a parameter before using it in a SQL statement, leading to a SQL injection exploitable by unauthenticated users.

How urgent is CVE-2023-6063?

Priority 61/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2023-1375 MEDIUM 4.3 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized cache deletion in versions up to, and
CVE-2020-36836 HIGH 8.0 UPGRADE The WP Fastest Cache plugin for WordPress is vulnerable to unauthorized arbitrary file deletion in versions up

References

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