CVE-2025-63709 — MEDIUM (5.4)

Vulnerability Description

A Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Simple To-Do List System 1.0 in the "Add Tasks" text input. An authenticated user can submit HTML/JavaScript that is not correctly sanitized or encoded on output. The injected script is stored and later rendered in the browser of any user who views the task, allowing execution of arbitrary script in the context of the victim's browser.

CVSS Score

5.4

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Chuck24	Simple To-Do List System	1.0

Related Weaknesses (CWE)

CWE-79

References

https://github.com/floccocam-cpu/CVE-Research-2025/tree/main/CVE-2025-63709ExploitMitigationThird Party Advisory
https://www.sourcecodester.com/php/17897/simple-do-list-system-using-php.htmlProduct

FAQ

What is CVE-2025-63709?

CVE-2025-63709 is a vulnerability with a CVSS score of 5.4 (MEDIUM). A Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Simple To-Do List System 1.0 in the "Add Tasks" text input. An authenticated user can submit HTML/JavaScript that is not correctly s...

How severe is CVE-2025-63709?

CVE-2025-63709 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-63709?

Check the references section above for vendor advisories and patch information. Affected products include: Chuck24 Simple To-Do List System.