CVE-2022-4447: The Fontsy WordPress plugin through 1.8.6 does not properly sanitize and escape a parameter before using it in

Q: How do I fix CVE-2022-4447?

fontsy: upgrade to newer than 1.8.6. Exact commands for each OS are on this page.

Q: Is CVE-2022-4447 being exploited?

CVE-2022-4447 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-2022-4447 affect?

CVE-2022-4447 affects fontsy. Severity is critical (CVSS 9.8). The Fontsy WordPress plugin through 1.8.6 does not properly sanitize and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection.

Q: How urgent is CVE-2022-4447?

Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2022-4447 is a critical-severity flaw (CVSS 9.8) affecting fontsy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Fontsy WordPress plugin through 1.8.6 does not properly sanitize and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection.

Why this priority

Critical severity
EPSS top 8%: 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	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	4.8% (top 8%)
CISA exploited list	No
Published	2023-01-16
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: fontsy project

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

Am I affected?

Timeline

2023-01-16 16:15 UTCPublished CVE record published
2026-06-17 05:20 UTCUpdated Record last modified

fontsy project fontsy UPGRADE

Affected: <= 1.8.6

Fixed in: newer than 1.8.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fontsy || rpm -q fontsy || fontsy --version

2. UPGRADE to newer than 1.8.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fontsy

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fontsy

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.

Nuclei scan template: WordPress Fontsy <=1.8.6 - 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-2022-4447?

fontsy: upgrade to newer than 1.8.6. Exact commands for each OS are on this page.

Is CVE-2022-4447 being exploited?

CVE-2022-4447 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-2022-4447 affect?

CVE-2022-4447 affects fontsy. Severity is critical (CVSS 9.8). The Fontsy WordPress plugin through 1.8.6 does not properly sanitize and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection.

How urgent is CVE-2022-4447?

Priority 67/100. Critical severity; EPSS top 8%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

References

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