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Description

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.

PUBLISHED Reserved 2026-04-18 | Published 2026-04-19 | Updated 2026-04-20 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 4.7CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 4.7CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.8AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Unrestricted Upload

Improper Access Controls

Timeline

2026-04-18:Advisory disclosed
2026-04-18:VulDB entry created
2026-04-18:VulDB entry last update

Credits

z0ng (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/358198 (VDB-358198 | EyouCMS Index.php edit_adminlogo unrestricted upload) vdb-entry technical-description

vuldb.com/vuln/358198/cti (VDB-358198 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/788038 (Submit #788038 | Hainan Zanzan Network Technology Co., Ltd. EyouCMS <= v1.7.1 High) third-party-advisory

github.com/...Leading to Sensitive Information Disclosure.md exploit

cve.org (CVE-2026-6561)

nvd.nist.gov (CVE-2026-6561)

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