CVE-2026-23768

Medium

Description

lucy-xss-filter before commit 7c1de6d allows an attacker to induce server-side HEAD requests to arbitrary URLs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute missing a file extension.

SeverityMedium

CVSS6.1

Exploit probability—

ProductNaver Lucy-xss-filter

PublishedJan 16, 2026

First seenJan 16, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

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

Vendor advisories

cve.naver.com/detail/cve-2026-23768.html
github.com/naver/lucy-xss-filter/pull/31

Affected products

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

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