What is the CVSS score of CVE-2020-36996?

CVE-2020-36996 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of PHP are affected by CVE-2020-36996?

Organizations using PHPFusion 9.03.50 should be aware of moderate risk from CVE-2020-36996, a cross-site scripting vulnerability rated CVSS 6.4.

Is there a public PoC exploit available for CVE-2020-36996?

Yes, a public proof-of-concept exploit is available for CVE-2020-36996. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2020-36996?

Within 30 days: Identify affected systems running the print.php page that fails to properly sanitize user-subm and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

PHP CVE-2020-36996

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-01-30 disclosure@vulncheck.com

PHP XSS

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:00 vuln.today

PoC Detected

Feb 04, 2026 - 16:34 vuln.today

Public exploit code

CVE Published

Jan 30, 2026 - 17:16 nvd

MEDIUM 6.4

DescriptionCVE.org

PHPFusion 9.03.50 contains a persistent cross-site scripting vulnerability in the print.php page that fails to properly sanitize user-submitted message content. Attackers can inject malicious JavaScript through forum messages that will execute when the print page is generated, allowing script execution in victim browsers.

AnalysisAI

PHPFusion 9.03.50 contains a persistent cross-site scripting vulnerability in the print.php page that fails to properly sanitize user-submitted message content. [CVSS 6.4 MEDIUM]

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects print.php page. PHPFusion 9.03.50 contains a persistent cross-site scripting vulnerability in the print.php page that fails to properly sanitize user-submitted message content. Attackers can inject malicious JavaScript through forum messages that will execute when the print page is generated, allowing script execution in victim browsers.

Affected ProductsAI

Product: print.php page.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.