CVE-2020-37152: PHP-Fusion 9.03.50 panels.php is vulnerable to cross-site scripting (XSS) via the 'panel_content' POST paramet

Routine

MEDIUM 6.1DOWNGRADE

CVE-2020-37152 is a medium-severity flaw (CVSS 6.1) affecting phpfusion. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

PHP-Fusion 9.03.50 panels.php is vulnerable to cross-site scripting (XSS) via the 'panel_content' POST parameter. The application fails to properly sanitize user input before rendering it in the browser, allowing attackers to inject arbitrary JavaScript. This can be exploited by submitting crafted input to the 'panel_content' field in panels.php, resulting in execution of malicious scripts in the context of the affected site.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-02-05
Last modified	2026-06-17

Publisher (CNA): VulnCheck · Vendor: php-fusion

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

Am I affected?

Timeline

2026-02-05 17:16 UTCPublished CVE record published
2026-06-17 03:17 UTCUpdated Record last modified

php-fusion phpfusion DOWNGRADE

Affected: 9.03.50

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.03.50

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.03.50 (Debian / Ubuntu)

apt-cache madison phpfusion sudo apt install phpfusion=<VERSION_BEFORE_9.03.50> sudo apt-mark hold phpfusion

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list phpfusion sudo dnf downgrade phpfusion-<VERSION_BEFORE_9.03.50> sudo dnf versionlock add phpfusion

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2020-37152?

phpfusion: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-37152 being exploited?

CVE-2020-37152 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-2020-37152 affect?

CVE-2020-37152 affects phpfusion. Severity is medium (CVSS 6.1). PHP-Fusion 9.03.50 panels.php is vulnerable to cross-site scripting (XSS) via the 'panel_content' POST parameter. The application fails to properly sanitize user input before rendering it in the browser, allowing attackers to inject arbitra

How urgent is CVE-2020-37152?

Priority 27/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

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References

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