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.
References (2)
Core 2
Core References
Exploit, Mitigation, Third Party Advisory
https://github.com/floccocam-cpu/CVE-Research-2025/tree/main/CVE-2025-63709
Scores
CVSS v3
5.4
EPSS
0.0004
EPSS Percentile
10.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
chuck24/simple_to-do_list_system
1.0
Published
Nov 10, 2025
Tracked Since
Feb 18, 2026