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CVE-2026-23768

Quick assessment

Affected
NAVER lucy-xss-filter
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lucy-XSS是NAVER开源的一个跨站脚本工具防护库。 Lucy-XSS存在安全漏洞，该漏洞源于ObjectSecurityListener或EmbedSecurityListener选项启用时，src属性缺少文件扩展名，可能导致服务器端HEAD请求。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-23768

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Lucy-XSS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lucy-XSS是NAVER开源的一个跨站脚本工具防护库。 Lucy-XSS存在安全漏洞，该漏洞源于ObjectSecurityListener或EmbedSecurityListener选项启用时，src属性缺少文件扩展名，可能导致服务器端HEAD请求。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NAVER lucy-xss-filter 7c1de6db76749ceb7b382493da29c4348853cf6b -

II. Public POCs for CVE-2026-23768

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III. Intelligence Information for CVE-2026-23768

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Patches & Fixes for CVE-2026-23768 (1)

IV. Related Vulnerabilities

Same product: lucy-xss-filter
Same vendor: NAVER
Same weakness: CWE-918

V. Comments for CVE-2026-23768

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