How severe is CVE-2025-63709?

CVE-2025-63709 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2025-63709 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63709?

CVE-2025-63709 affects Chuck24 Simple To-do List System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63709?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-63709 have an EU (EUVD) identifier?

Yes. CVE-2025-63709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-44059.

When was CVE-2025-63709 published?

CVE-2025-63709 was published on 2025-11-10 and last updated on 2026-06-17.

CVE-2025-63709

CVE-2025-63709 is a medium-severity vulnerability in Chuck24 Simple To-do List System with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-44059
Weakness: CWE-79
Affected product: Chuck24 Simple To-do List System
Published: 2025-11-10
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-63709?: 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.
How severe is CVE-2025-63709?: CVE-2025-63709 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-63709 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63709?: CVE-2025-63709 affects Chuck24 Simple To-do List System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63709?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-63709 have an EU (EUVD) identifier?: Yes. CVE-2025-63709 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-44059.
When was CVE-2025-63709 published?: CVE-2025-63709 was published on 2025-11-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:chuck24:simple_to-do_list_system:1.0:*:*:*:*:*:*:*

More vulnerabilities in Chuck24 Simple To-do List System

CVE-2025-4248 — Medium (CVSS 6.3): A vulnerability has been found in SourceCodester Simple To-Do List System 1.0 and classified as critical. Affected by…
CVE-2025-4247 — Medium (CVSS 6.3): A vulnerability, which was classified as critical, was found in SourceCodester Simple To-Do List System 1.0. Affected…
CVE-2025-10117 — Low (CVSS 3.5): A weakness has been identified in SourceCodester Simple To-Do List System 1.0. Impacted is an unknown function of the…

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