How severe is CVE-2026-23768?

CVE-2026-23768 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-2026-23768 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23768?

CVE-2026-23768 affects Naver Lucy-xss-filter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23768?

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

Does CVE-2026-23768 have an EU (EUVD) identifier?

Yes. CVE-2026-23768 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2934.

When was CVE-2026-23768 published?

CVE-2026-23768 was published on 2026-01-16 and last updated on 2026-06-17.

CVE-2026-23768

CVE-2026-23768 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-918.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2934
Weakness: CWE-918
Affected product: Naver Lucy-xss-filter
Published: 2026-01-16
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-23768?: 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.
How severe is CVE-2026-23768?: CVE-2026-23768 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-2026-23768 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23768?: CVE-2026-23768 affects Naver Lucy-xss-filter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23768?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23768 have an EU (EUVD) identifier?: Yes. CVE-2026-23768 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2934.
When was CVE-2026-23768 published?: CVE-2026-23768 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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