How severe is CVE-2026-32756?

CVE-2026-32756 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-32756 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-32756?

CVE-2026-32756 affects Admidio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-32756?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-32756 have an EU (EUVD) identifier?

Yes. CVE-2026-32756 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13386.

When was CVE-2026-32756 published?

CVE-2026-32756 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-32756

CVE-2026-32756 is a high-severity vulnerability in Admidio with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13386
Weakness: CWE-434
Affected product: Admidio
Published: 2026-03-20
Last modified: 2026-06-17

Description

Admidio is an open-source user management solution. Versions 5.0.6 and below contain a critical unrestricted file upload vulnerability in the Documents & Files module. Due to a design flaw in how CSRF token validation and file extension verification interact within UploadHandlerFile.php, an authenticated user with upload permissions can bypass file extension restrictions by intentionally submitting an invalid CSRF token. This allows the upload of arbitrary file types, including PHP scripts, which may lead to Remote Code Execution on the server, resulting in full server compromise, data exfiltration, and lateral movement. This issue has been fixed in version 5.0.7.

Frequently asked questions

What is CVE-2026-32756?: Admidio is an open-source user management solution. Versions 5.0.6 and below contain a critical unrestricted file upload vulnerability in the Documents & Files module. Due to a design flaw in how CSRF token validation and file extension verification interact within UploadHandlerFile.php, an authenticated user with upload permissions can bypass file extension restrictions by intentionally submitting an invalid CSRF token. This allows the upload of arbitrary file types, including PHP scripts, which may lead to Remote Code Execution on the server, resulting in full server compromise, data exfiltration, and lateral movement. This issue has been fixed in version 5.0.7.
How severe is CVE-2026-32756?: CVE-2026-32756 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-32756 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-32756?: CVE-2026-32756 affects Admidio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-32756?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-32756 have an EU (EUVD) identifier?: Yes. CVE-2026-32756 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13386.
When was CVE-2026-32756 published?: CVE-2026-32756 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:admidio:admidio:*:*:*:*:*:*:*:*

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