How to fix EUVD-2025-21401?

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

Is Caido affected by EUVD-2025-21401?

Organizations using versions should be aware of moderate risk from CVE-2025-53834, a cross-site scripting vulnerability rated CVSS 6.3. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

Caido EUVD-2025-21401

| CVE-2025-53834 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-07-14 [email protected]

XSS

6.3

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Patch available

Apr 16, 2026 - 05:29 EUVD

0.49.0

Analysis Generated

Mar 16, 2026 - 09:43 vuln.today

EUVD ID Assigned

Mar 16, 2026 - 09:43 euvd

EUVD-2025-21401

CVE Published

Jul 14, 2025 - 23:15 nvd

MEDIUM 6.3

DescriptionNVD

Caido is a web security auditing toolkit. A reflected cross-site scripting (XSS) vulnerability was discovered in Caido’s toast UI component in versions prior to 0.49.0. Toast messages may reflect unsanitized user input in certain tools such as Match&Replace and Scope. This could allow an attacker to craft input that results in arbitrary script execution. Version 0.49.0 fixes the issue.

Analysis

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

EUVD-2025-21401 vulnerability details – vuln.today

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