What is the CVSS score of CVE-2026-23769?

CVE-2026-23769 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Lucy Xss Filter are affected by CVE-2026-23769?

Organizations using lucy-xss-filter before commit e5826c0 should be aware of moderate risk from CVE-2026-23769, a cross-site scripting vulnerability rated CVSS 6.1.. A patch is available.

How to fix or mitigate CVE-2026-23769?

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

Lucy Xss Filter CVE-2026-23769

MEDIUM

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

2026-01-16 cve@navercorp.com

XSS Lucy Xss Filter Naver

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

Patch released

Jan 23, 2026 - 17:19 nvd

Patch available

CVE Published

Jan 16, 2026 - 06:15 nvd

MEDIUM 6.1

DescriptionCVE.org

lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

AnalysisAI

lucy-xss-filter before commit e5826c0 contains a cross-site scripting (XSS) vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in users' browsers through improper input sanitization caused by misconfigured default filter rules. The vulnerability requires user interaction to trigger and affects the confidentiality and integrity of web applications relying on this filter. A patch is available to address the misconfigured rule set.

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Lucy-Xss-Filter. lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

RemediationAI

A vendor patch is available — apply it immediately. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.