How to fix CVE-2025-3900?

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

Is Colorbox affected by CVE-2025-3900?

CVE-2025-3900 presents moderate security risk, a cross-site scripting vulnerability rated CVSS 6.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Organizations should apply vendor updates when available and monitor for exploitation.

CVE-2025-3900

MEDIUM

2025-04-23 [email protected]

6.1

CVSS 3.1

CVSS Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Patch Released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

CVE Published

Apr 23, 2025 - 17:16 nvd

MEDIUM 6.1

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Colorbox allows Cross-Site Scripting (XSS).This issue affects Colorbox: from 0.0.0 before 2.1.3.

Analysis

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Colorbox allows Cross-Site Scripting (XSS).0.0 before 2.1.3. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical Context

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. Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Colorbox allows Cross-Site Scripting (XSS).0.0 before 2.1.3. Affected products include: Colorbox Project Colorbox. Version information: before 2.1.3..

Affected Products

Colorbox Project Colorbox.

Remediation

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.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.2

CVSS: +30

POC: 0

CVE-2025-3900 vulnerability details – vuln.today

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CVE-2025-3900

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CVE-2025-3900

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

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External POC / Exploit Code