PT-2026-3220 · Unknown · Lucy-Xss-Filter

Kim Si Ung + 1 · Published 2026-01-16 · Updated 2026-01-16 · CVE-2026-23768

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions lucy-xss-filter versions prior to commit 7c1de6d

Description The software contains a flaw that allows an attacker to trigger server-side HEAD requests to arbitrary URLs. This occurs when the ObjectSecurityListener or EmbedSecurityListener option is enabled and embed or object tags are used with a src attribute lacking a file extension.

Recommendations Update to version 7c1de6d or later.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-23768

Affected Products

Lucy-Xss-Filter

References · 5

• https://github.com/naver/lucy-xss-filter/pull/31 · Patch
• https://cve.naver.com/detail/cve-2026-23768.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23768 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23768 · Vendor Advisory
• https://twitter.com/CVEnew/status/2012126445921783940 · Twitter Post