How to fix CVE-2025-23039?

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

Is Caido affected by CVE-2025-23039?

Organizations using Caido should be aware of moderate risk from CVE-2025-23039, a cross-site scripting vulnerability rated CVSS 5.2. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

Caido CVE-2025-23039

MEDIUM

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

2025-01-17 [email protected]

XSS

5.2

CVSS 3.1

CVSS VectorNVD

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

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:04 vuln.today

CVE Published

Jan 17, 2025 - 21:15 nvd

MEDIUM 5.2

DescriptionNVD

Caido is a web security auditing toolkit. A Cross-Site Scripting (XSS) vulnerability was identified in Caido v0.45.0 due to improper sanitization in the URL decoding tooltip of HTTP request and response editors. This issue could allow an attacker to execute arbitrary scripts, potentially leading to the theft of sensitive information. This issue has been addressed in version 0.45.1 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

AnalysisAI

Caido is a web security auditing toolkit. Rated medium severity (CVSS 5.2), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

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. Caido is a web security auditing toolkit. A Cross-Site Scripting (XSS) vulnerability was identified in Caido v0.45.0 due to improper sanitization in the URL decoding tooltip of HTTP request and response editors. This issue could allow an attacker to execute arbitrary scripts, potentially leading to the theft of sensitive information. This issue has been addressed in version 0.45.1 and all users are advised to upgrade. There are no known workarounds for this vulnerability. Version information: version 0.45.1.

Affected ProductsAI

Caido v0.45.0 due to improper sanitization in the URL decoding tooltip of HTTP request and response editors. This.

RemediationAI

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.

CVE-2025-23039 vulnerability details – vuln.today

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