PT-2026-3375 · Eyoucms · Eyoucms

Nobb · Published 2026-01-18 · Updated 2026-01-18 · CVE-2026-1107

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions EyouCMS versions up to 1.7.1 and 5.0

Description A flaw exists in EyouCMS related to unrestricted file upload. The issue is located within the check userinfo function of the Diyajax.php file, specifically in the Member Avatar Handler component. Manipulation of the viewfile argument can allow for unauthorized file uploads. The exploit is publicly available. The vendor was notified but did not respond.

Recommendations Versions prior to 1.7.1 and 5.0 should be updated.

Exploit

Fix

Improper Access Control

Unrestricted File Upload

Weakness Enumeration

CWE-284

CWE-434

Related Identifiers

CVE-2026-1107

Affected Products

Eyoucms

References · 9

• 🔥 https://github.com/24-2021/vul3/blob/main/Eyoucms/Eyoucms%3D1.7.1%20check_userinfo%20api%20viewfile%20exists%2C%20causing%20code%20execution%20due%20to%20file%20inclusion.md#poc · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-1107 · Security Note
• https://osv.dev/vulnerability/CVE-2026-1107 · Vendor Advisory
• https://github.com/24-2021/vul3/blob/main/Eyoucms/Eyoucms%3D1.7.1%20check_userinfo%20api%20viewfile%20exists%2C%20causing%20code%20execution%20due%20to%20file%20inclusion.md · Note
• https://twitter.com/VulmonFeeds/status/2012701840702349590 · Twitter Post
• https://vuldb.com/?submit.731540 · Note
• https://twitter.com/CVEnew/status/2012763619281481927 · Twitter Post
• https://vuldb.com/?id.341699 · Note
• https://vuldb.com/?ctiid.341699 · Note