Home→Vulnerabilities→CVE-2026-6561
Disclosed

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.

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Exploitation Probability (EPSS)

Low Priority
0.01%

The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.

0% (Theoretical)100% (Certainty)

7-Day Exploitation Trend

Vulnerability Timeline

2 events
Apr 19, 2026
Vulnerability Disclosed
Published to component-level vulnerability database.
Apr 29, 2026
Last Updated
Record updated with new analysis or tags.

Threat Actor Attribution

PREMIUM INTEL
Associated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes

Remediation & Mitigation

SOLUTION

Official patches and mitigation steps are available for this vulnerability.

# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name

References

https://github.com/zzk6th/my-cve-notes/blob/main/EyouCMS%20Arbitrary%20File%20Copy%20Vulnerability%20in%20edit_adminlogo()%20Leading%20to%20Sensitive%20Information%20Disclosure.mdGitHub
https://vuldb.com/submit/788038Vuldb
https://vuldb.com/vuln/358198Vuldb
https://vuldb.com/vuln/358198/ctiVuldb

Am I Vulnerable?

Check your domain or package.json for CVE-2026-6561 exposure.

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Vulnerability Details

CVSS Base Score
4.7/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Published Date
Apr 19, 2026
Last Modified
Apr 29, 2026
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