Which versions of Yzmcms are affected by CVE-2025-3397?

Organizations using A vulnerability classified as problematic should be aware of moderate risk from CVE-2025-3397, a cross-site scripting vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2025-3397?

Yes, a public proof-of-concept exploit is available for CVE-2025-3397. Prioritise patching immediately. EPSS: 0.2%.

How to fix or mitigate CVE-2025-3397?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Yzmcms CVE-2025-3397

Q: What is the CVSS score of CVE-2025-3397?

CVE-2025-3397 has a CVSS 4.0 base score of 5.3 (Medium). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.2%.

MEDIUM

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

2025-04-08 cna@vuldb.com

XSS Yzmcms

5.3

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

5.3 MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:35 vuln.today

PoC Detected

Apr 09, 2025 - 14:37 vuln.today

Public exploit code

CVE Published

Apr 08, 2025 - 02:15 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability classified as problematic has been found in YzmCMS 7.1. Affected is an unknown function of the file message.tpl. The manipulation of the argument gourl leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

A vulnerability classified as problematic has been found in YzmCMS 7.1. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A vulnerability classified as problematic has been found in YzmCMS 7.1. Affected is an unknown function of the file message.tpl. The manipulation of the argument gourl leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. Affected products include: Yzmcms.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.