Medium severity · published Aug 12, 2026
CVE-2026-47234
Admidio writes session IDs and auto-login cookie values to application logs
4.4
CVSS
0.2%
EPSS
No
On KEV
Description
Admidio is an open-source user management solution. Prior to version 5.0.10, when debug logging is enabled, `Session::setCookie()` logs full cookie values and `Session::start()` logs the current session ID. In a real Admidio deployment this includes both the active session cookie and the persistent auto-login cookie. Anyone with access to the log sink can recover live bearer-style credentials from the logs. Version 5.0.10 contains a fix.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AD
admidio · Admidio
< 5.0.10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-47234
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-47234
github.com
https://github.com/Admidio/admidio/blob/v5.0.9/src/Session/Entity/Session.php#L533-L540
github.com
https://github.com/Admidio/admidio/blob/v5.0.9/src/Session/Entity/Session.php#L615-L617
github.com
https://github.com/Admidio/admidio/security/advisories/GHSA-mch8-wf3h-6x88
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