How severe is CVE-2026-34381?

CVE-2026-34381 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-34381 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34381?

CVE-2026-34381 affects Admidio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34381?

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-2026-34381 have an EU (EUVD) identifier?

Yes. CVE-2026-34381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17622.

When was CVE-2026-34381 published?

CVE-2026-34381 was published on 2026-03-31 and last updated on 2026-06-17.

CVE-2026-34381

CVE-2026-34381 is a high-severity vulnerability in Admidio with a CVSS 3.x base score of 7.5. 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-17622
Weakness: CWE-284
Affected product: Admidio
Published: 2026-03-31
Last modified: 2026-06-17

Description

Admidio is an open-source user management solution. From version 5.0.0 to before version 5.0.8, Admidio relies on adm_my_files/.htaccess to deny direct HTTP access to uploaded documents. The Docker image ships with AllowOverride None in the Apache configuration, which causes Apache to silently ignore all .htaccess files. As a result, any file uploaded to the documents module regardless of the role-based permissions configured in the UI, is directly accessible over HTTP without authentication by anyone who knows the file path. The file path is disclosed in the upload response JSON. This issue has been patched in version 5.0.8.

Frequently asked questions

What is CVE-2026-34381?: Admidio is an open-source user management solution. From version 5.0.0 to before version 5.0.8, Admidio relies on adm_my_files/.htaccess to deny direct HTTP access to uploaded documents. The Docker image ships with AllowOverride None in the Apache configuration, which causes Apache to silently ignore all .htaccess files. As a result, any file uploaded to the documents module regardless of the role-based permissions configured in the UI, is directly accessible over HTTP without authentication by anyone who knows the file path. The file path is disclosed in the upload response JSON. This issue has been patched in version 5.0.8.
How severe is CVE-2026-34381?: CVE-2026-34381 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-34381 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34381?: CVE-2026-34381 affects Admidio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34381?: 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-2026-34381 have an EU (EUVD) identifier?: Yes. CVE-2026-34381 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-17622.
When was CVE-2026-34381 published?: CVE-2026-34381 was published on 2026-03-31 and last updated on 2026-06-17.

References

Affected products (1)

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

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