TI-2026-30180 Aliases CVE-2026-41662 GHSA-c7xm-r6vj-8vg6

Admidio: Missing Minimum Administrator Check in Role Membership Removal

MEDIUM 57CWE-754Published 2026-05-07 · Updated 2026-05-07

Key facts

Attack vector: Network
Privileges required: High
User interaction: Required
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · Low · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Admidio is an open-source user management solution. Prior to version 5.0.9, Role::stopMembership() does not verify whether removing a user from the administrator role leaves zero administrators. The deprecated Membership::stopMembership() contains this safety check, but the current code path bypasses it. Any administrator can remove the last remaining other administrator, locking the entire system out of administrative access. The exploit does not require concurrent requests; sequential removals produce the same result. This issue has been patched in version 5.0.9.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00285 21st percentileScored 2026-11-07

Fix Fixed admidio (Admidio): 5.0.9admidio/admidio (Packagist): 5.0.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Admidio	admidio	before 5.0.9	5.0.9	Patch available	CNA
—	admidio/admidio (Packagist)	before 5.0.9	5.0.9	Patch available	GHSA-c7xm-r6vj-8vg6

admidio VendorAdmidio Affected before 5.0.9 Fixed in 5.0.9 Patch available CNA
admidio/admidio (Packagist) Vendor— Affected before 5.0.9 Fixed in 5.0.9 Patch available GHSA-c7xm-r6vj-8vg6

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:admidio:admidio::::::::	—	—	Admidio

cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:* Versions — — ·Admidio

Remediation

Fix · CNA admidio (Admidio) Fixed in 5.0.9
Fix · GHSA-c7xm-r6vj-8vg6 admidio/admidio (Packagist) Fixed in 5.0.9 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-41662
2026-10-03 Alias added: GHSA-c7xm-r6vj-8vg6

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-41662

Other 3

TI-2026-25286 Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion CVSS 3.1CRITICAL 9.1
TI-2026-56995 Admidio before 5.0.12 Authentication Bypass via RSS feeds CVSS 4.0HIGH 8.7
TI-2026-56993 Admidio before 5.0.12 SQL Injection via relation_type_list CVSS 4.0HIGH 8.7
TI-2024-25222 Admidio has Blind SQL Injection in ecard_send.php CVSS 3.1CRITICAL 10.0
TI-2026-30186 Admidio: SAML Signature Validation Result Ignored — Forged AuthnRequests and LogoutRequests Processed CVSS 3.1HIGH 8.2
TI-2024-25764 Admidio Vulnerable to RCE via Arbitrary File Upload in Message Attachment CVSS 3.1CRITICAL 9.1

See all 72 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences