Vulnerability · Published Jan 16, 2026 · Assigned by naver
CVE-2026-23768
Medium 6.1
In plain English
A medium-severity server-side request forgery in lucy-xss-filter from NAVER. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 84.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NAVER | lucy-xss-filter | see references |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- https://cve.naver.com/detail/cve-2026-23768.html vendor-advisory
- https://github.com/naver/lucy-xss-filter/pull/31 mitigation