How severe is CVE-2026-23769?

CVE-2026-23769 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-23769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23769?

CVE-2026-23769 affects Naver Lucy-xss-filter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23769?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23769 have an EU (EUVD) identifier?

Yes. CVE-2026-23769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2945.

When was CVE-2026-23769 published?

CVE-2026-23769 was published on 2026-01-16 and last updated on 2026-06-17.

CVE-2026-23769

CVE-2026-23769 is a medium-severity vulnerability in Naver Lucy-xss-filter with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2945
Weakness: CWE-79
Affected product: Naver Lucy-xss-filter
Published: 2026-01-16
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is 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.
How severe is CVE-2026-23769?: CVE-2026-23769 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-23769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23769?: CVE-2026-23769 affects Naver Lucy-xss-filter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23769 have an EU (EUVD) identifier?: Yes. CVE-2026-23769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2945.
When was CVE-2026-23769 published?: CVE-2026-23769 was published on 2026-01-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:naver:lucy-xss-filter:*:*:*:*:*:*:*:*

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