CVE-2023-39309: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ThemeFus

Q: How do I fix CVE-2023-39309?

fusion builder: upgrade to newer than 3.11.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-39309 being exploited?

CVE-2023-39309 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-2023-39309 affect?

CVE-2023-39309 affects fusion builder. Severity is high (CVSS 8.5). Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ThemeFusion Fusion Builder.This issue affects Fusion Builder: from n/a through 3.11.1.

This month

HIGH 8.5UPGRADE

CVE-2023-39309 is a high-severity flaw (CVSS 8.5) affecting fusion builder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ThemeFusion Fusion Builder.This issue affects Fusion Builder: from n/a through 3.11.1.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-89
Published	2024-03-28
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: avada

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

Am I affected?

Timeline

2024-03-28 07:15 UTCPublished CVE record published
2026-06-17 06:12 UTCUpdated Record last modified

avada fusion builder UPGRADE

Affected: <= 3.11.1

Fixed in: newer than 3.11.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy fusion-builder || rpm -q fusion-builder || fusion-builder --version

2. UPGRADE to newer than 3.11.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fusion-builder

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fusion-builder

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-2023-39309?

fusion builder: upgrade to newer than 3.11.1. Exact commands for each OS are on this page.

Is CVE-2023-39309 being exploited?

CVE-2023-39309 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-2023-39309 affect?

CVE-2023-39309 affects fusion builder. Severity is high (CVSS 8.5). Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in ThemeFusion Fusion Builder.This issue affects Fusion Builder: from n/a through 3.11.1.

How urgent is CVE-2023-39309?

Priority 43/100. High severity

Related CVEs

CVE-2023-39311 HIGH 7.1 UPGRADE Cross-Site Request Forgery (CSRF) vulnerability in ThemeFusion Fusion Builder.This issue affects Fusion Builde

References

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