CVE-2026-23769

Medium

Description

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

SeverityMedium

CVSS6.1

Exploit probability—

ProductNaver Lucy-xss-filter

PublishedJan 16, 2026

First seenJan 16, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

naver lucy-xss-filter2025-06-08 or later

Vendor advisories

cve.naver.com/detail/cve-2026-23769.html
github.com/naver/lucy-xss-filter/pull/32

Affected products

Product	Affected versions	Fixed in
naver lucy-xss-filter	v < 2025-06-08	2025-06-08

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.