What is CVE-2026-6561?

CVE-2026-6561 is a medium-severity vulnerability in Eyoucms, classified under Improper Access Control. CVSS score: 4.7/10. Published 2026-04-19.

How severe is CVE-2026-6561?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Arbitrary file upload in Eyoucms

CVE-2026-6561

A vulnerability was detected in EyouCMS up to 1.7.1. This issue affects the function edit_adminlogo of the file application/admin/controller/Index.php. Performing a manipulation of the argument filename results in unrestricted upload. The attack is possible to be carried out remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

EPSS: 0.003 (20.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.

Affected products

N/a Eyoucms — versions 1.7.0, 1.7.1

Weakness classification (CWE)

References

cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-6561?: CVE-2026-6561 is a medium-severity vulnerability in Eyoucms, classified under Improper Access Control. CVSS score: 4.7/10. Published 2026-04-19.
How severe is CVE-2026-6561?: Medium severity. CVSS v3 base score is 4.7 out of 10.