Server-side request forgery in NAVER lucy-xss-filter
Priority MEDIUM 60CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00241 15th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-23768
- 2026-10-03 Alias added: GHSA-2xhv-22cq-xj7w
References
More NAVER Lucy-xss-filter vulnerabilities
- TI-2026-19140 Cross-site scripting in NAVER lucy-xss-filter CVSS 3.1MEDIUM 6.5
Sources
- CVE-2026-23768 · CVE Program
- CVE-2026-23768 · NVD
- FIRST EPSS
- GHSA-2xhv-22cq-xj7w · GitHub Advisory Database · CC BY 4.0
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