CVE-2023-4190Public exploitNetwork attack vector

Continued account access via retained logout session

Published Aug 6, 2023 · Updated Oct 9, 2024

Insufficient session expiration in Admidio before 4.2.11 allows remote attackers to retain account access after a user logs out. The Session::logout() method ended its database transaction without clearing or destroying the PHP session, so the existing session identifier remained authorized. Exploitation requires possession of a valid session identifier and permits continued access to the affected user's data and functions after logout.

CVSS severity6.5
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient session expiration in Admidio before 4.2.11 allows remote attackers to retain account access after a user logs out. The Session::logout() method ended its database transaction without clearing or destroying the PHP session, so the existing session identifier remained authorized. Exploitation requires possession of a valid session identifier and permits continued access to the affected user's data and functions after logout.

The record

CVE
CVE-2023-4190
Published
Aug 6, 2023
Updated
Oct 9, 2024
Vendor
Admidio
Product
Admidio
Classifications
CWE-613, T1550.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.2.11
  2. Affected versionversion=unspecified <4.2.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Admidio · Admidioversion=0 <4.2.11; version=unspecified <4.2.11

Published CVSS scores

6.5huntr.devCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-613Insufficient Session Expiration
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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