CVE-2026-41660Public exploitNetwork attack vector

2FA removal via inverted user-ID comparison

Published May 7, 2026 · Updated May 7, 2026

Incorrect authorization in Admidio before 5.0.9 allows remote authenticated users to remove another account's TOTP configuration. The reset path in modules/profile/two_factor_authentication.php uses !== when comparing the current and target user IDs, so its guard blocks self-resets but permits cross-account resets. A group leader must have profile-edit rights over the target; removing an administrator's TOTP reduces that account to password-only authentication.

CVSS severity7.1
High
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Admidio before 5.0.9 allows remote authenticated users to remove another account's TOTP configuration. The reset path in modules/profile/two_factor_authentication.php uses !== when comparing the current and target user IDs, so its guard blocks self-resets but permits cross-account resets. A group leader must have profile-edit rights over the target; removing an administrator's TOTP reduces that account to password-only authentication.

The record

CVE
CVE-2026-41660
Published
May 7, 2026
Updated
May 7, 2026
Vendor
Admidio
Product
Admidio
Classifications
CWE-863, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 2026Record 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=< 5.0.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Admidio · Admidioversion=< 5.0.9

Published CVSS scores

7.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1098Account Manipulation

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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