How severe is CVE-2026-29934?

CVE-2026-29934 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-2026-29934 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-2026-29934?

CVE-2026-29934 affects Lightcms Project Lightcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29934?

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

Does CVE-2026-29934 have an EU (EUVD) identifier?

Yes. CVE-2026-29934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16211.

When was CVE-2026-29934 published?

CVE-2026-29934 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-29934

CVE-2026-29934 is a medium-severity vulnerability in Lightcms Project Lightcms 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-2026-16211
Weakness: CWE-79
Affected product: Lightcms Project Lightcms
Published: 2026-03-26
Last modified: 2026-06-17

Description

A reflected cross-site scripting (XSS) vulnerability in the /admin/menus component of Lightcms v2.0 allows attackers to execute arbitrary Javascript in the context of the user's browser via modifying the referer value in the request header.

Frequently asked questions

What is CVE-2026-29934?: A reflected cross-site scripting (XSS) vulnerability in the /admin/menus component of Lightcms v2.0 allows attackers to execute arbitrary Javascript in the context of the user's browser via modifying the referer value in the request header.
How severe is CVE-2026-29934?: CVE-2026-29934 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-2026-29934 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-2026-29934?: CVE-2026-29934 affects Lightcms Project Lightcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29934?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29934 have an EU (EUVD) identifier?: Yes. CVE-2026-29934 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16211.
When was CVE-2026-29934 published?: CVE-2026-29934 was published on 2026-03-26 and last updated on 2026-06-17.

References

https://github.com/eddy8/LightCMS/issues/38

Affected products (1)

cpe:2.3:a:lightcms_project:lightcms:2.0:*:*:*:*:*:*:*

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