TI-2025-39430 Aliases CVE-2025-63709 GHSA-4x55-4jgw-65pj

A Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Simple To-Do List…

MEDIUM 58CWE-79Published 2025-11-10 · Updated 2025-12-01

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00253 16th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:chuck24:simple_to-do_list_system:1.0:::::::*	1.0	Vulnerable	Chuck24

cpe:2.3:a:chuck24:simple_to-do_list_system:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Chuck24

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-63709
2026-10-03 Alias added: GHSA-4x55-4jgw-65pj

References

Exploit 1

https://github.com/floccocam-cpu/CVE-Research-2025/tree/main/CVE-2025-63709

Other 1

https://www.sourcecodester.com/php/17897/simple-do-list-system-using-php.html

TI-2025-03779 SourceCodester Simple To-Do List System complete_task.php sql injection CVSS 4.0MEDIUM 5.3
TI-2025-03778 SourceCodester Simple To-Do List System delete_task.php sql injection CVSS 4.0MEDIUM 5.3
TI-2025-09290 SourceCodester Simple To-Do List System Add New Task fetch_tasks.php cross site scripting CVSS 4.0MEDIUM 5.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences