CVE-2026-41656 — MEDIUM (4.5)

Vulnerability Description

Admidio is an open-source user management solution. Prior to version 5.0.9, the add mode in modules/documents-files.php accepts a name parameter validated only as 'string' type (HTML encoding), allowing path traversal characters (../) to pass through unfiltered. Combined with the absence of CSRF protection on this endpoint and SameSite=Lax session cookies, a low-privileged attacker can trick a documents administrator into clicking a crafted link that registers an arbitrary server file (e.g., install/config.php containing database credentials) into a documents folder accessible to the attacker. This issue has been patched in version 5.0.9.

CVSS Score

4.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-22

References

FAQ

What is CVE-2026-41656?

CVE-2026-41656 is a vulnerability with a CVSS score of 4.5 (MEDIUM). Admidio is an open-source user management solution. Prior to version 5.0.9, the add mode in modules/documents-files.php accepts a name parameter validated only as 'string' type (HTML encoding), allowi...

How severe is CVE-2026-41656?

CVE-2026-41656 has been rated MEDIUM with a CVSS base score of 4.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-41656?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.