Low severity · published May 7, 2026
CVE-2026-41663
Admidio: CSRF on Admin Preferences Triggers Unauthorized Backup, .htaccess Write, and Email Send
3.5
CVSS
0.1%
EPSS
No
On KEV
Description
Admidio is an open-source user management solution. Prior to version 5.0.9, several administrative operations in Admidio's preferences module (database backup, test email, htaccess generation) fire via GET requests with no CSRF token validation. Because SameSite=Lax cookies travel with top-level GET navigations, an attacker forces an authenticated admin to trigger these actions from a malicious page. This issue has been patched in version 5.0.9.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
admidio · Admidio
< 5.0.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41663
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-41663
github.com
https://github.com/Admidio/admidio/releases/tag/v5.0.9
github.com
https://github.com/Admidio/admidio/security/advisories/GHSA-rw74-vc9h-534j
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