CVE-2026-32817: Admidio is Missing Authorization and CSRF Protection on Document and Folder Deletion

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
• EPSS 0.5%, percentile 42: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 42% of all scored CVEs (low). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Only applies if your dependency tree includes admidio/admidio (Composer (PHP)) >= 5.0.0, <= 5.0.6, fixed in 5.0.7. Check your lockfile, including transitive dependencies.

What it is

Admidio is an open-source user management solution. In versions 5.0.0 through 5.0.6, the documents and files module does not verify whether the current user has permission to delete folders or files. The folderdelete and filedelete action handlers in modules/documents-files.php only perform a VIEW authorization check (getFolderForDownload / getFileForDownload) before calling delete(), and they never validate a CSRF token. Because the target UUIDs are read from $GET, deletion can be triggered by a plain HTTP GET request. When the module is in public mode (documentsfilesmoduleenabled = 1) and a folder is marked public (folpublic = true), an unauthenticated attacker can permanently destroy the entire document library. Even when the module requires login, any user with view-only access can delete content they are only permitted to read. This issue has been fixed in version 5.0.7.

From the GitHub advisory

Summary

The documents and files module in Admidio does not verify whether the current user has permission to delete folders or files. The folderdelete and filedelete action handlers in modules/documents-files.php only perform a VIEW authorization check (getFolderForDownload / getFileForDownload) before calling delete(), and they never validate a CSRF token. Because the target UUIDs are read from $GET, deletion can be triggered by a plain HTTP GET request. When the module is in public mode (documentsfilesmoduleenabled = 1) and a folder is marked public (folpublic = true), an unauthenticated attacker can permanently destroy the entire document library. Even when the module requires login, any user with view-only access can delete content they are only permitted to read.

Details

Module Access Check

File: D:/bugcrowd/admidio/repo/modules/documents-files.php, lines 72-76

Weakness type: CWE-862.

Product: admidio/admidio (Composer (PHP)) · Assigned by: GitHub_M · Published: 2026-03-20

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation poc, automatable yes, technical impact partial.
• FIRST EPSS (model of 2026-10-21): 0.50% probability of exploitation activity in the next 30 days; percentile 42.

Timeline

• 2026-03-16 — GitHub-reviewed advisory GHSA-rmpj-3x5m-9m5f published (critical)
• 2026-03-20 — CVE record last updated
• 2026-03-20 — CVE record published by GitHub_M

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-rmpj-3x5m-9m5f github.com
2. CVE.org record CVE-2026-32817 cve.org
3. NVD entry CVE-2026-32817 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com

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