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Vulnerabilities

Security fix · CVE-2026-23769

lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

Published Jan 16, 2026 · catalog updated Jan 16, 2026 · NAVER

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-23769. EPSS is 0.22%. Act only if a listed version of NAVER is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.22%
Remediation
Vendor / distro source
Affected products
vendor NAVER lucy-xss-filter patch: e5826c0d26b4f546955279767bbe94e5c7ed3f15

lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor NAVER lucy-xss-filter patch: e5826c0d26b4f546955279767bbe94e5c7ed3f15patch: e5826c0d26b4f546955279767bbe94e5c7ed3f15

How to fix CVE-2026-23769

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-23769. EPSS is 0.22%. Act only if a listed version of NAVER is installed.

Which versions are affected?

Compare what you have installed with NAVER lucy-xss-filter patch: e5826c0d26b4f546955279767bbe94e5c7ed3f15 patch: e5826c0d26b4f546955279767bbe94e5c7ed3f15. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.22%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 16, 2026 · EUVD

    Detected

    lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

  2. Jan 16, 2026 · EUVD

    Updated

    lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

Sources

  • CVE.orgVulnerability recordCVE-2026-23769

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-23769

    30-day exploitation probability 0.22%

    first.org
  • EUVDVulnerability recordEUVD-2026-2945

    lucy-xss-filter before commit e5826c0 allows an attacker to execute malicious JavaScript due to improper sanitization caused by misconfigured default superset rule files.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 5, 2026
  • CVE.orgNov 5, 2026
  • EUVDNov 5, 2026