How severe is CVE-2025-6776?

CVE-2025-6776 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2025-6776 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6776?

CVE-2025-6776 affects Xiaoyunjie Openvpn-cms-flask. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6776?

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-2025-6776 have an EU (EUVD) identifier?

Yes. CVE-2025-6776 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19424.

When was CVE-2025-6776 published?

CVE-2025-6776 was published on 2025-06-27 and last updated on 2026-06-17.

CVE-2025-6776

CVE-2025-6776 is a high-severity vulnerability in Xiaoyunjie Openvpn-cms-flask with a CVSS 3.x base score of 7.3. 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-22.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
CVSS v4: 5.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-19424
Weakness: CWE-22
Affected product: Xiaoyunjie Openvpn-cms-flask
Published: 2025-06-27
Last modified: 2026-06-17

Description

A vulnerability classified as critical was found in xiaoyunjie openvpn-cms-flask up to 1.2.7. This vulnerability affects the function Upload of the file app/plugins/oss/app/controller.py of the component File Upload. The manipulation of the argument image leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.2.8 is able to address this issue. The name of the patch is e23559b98c8ea2957f09978c29f4e512ba789eb6. It is recommended to upgrade the affected component.

Frequently asked questions

What is CVE-2025-6776?: A vulnerability classified as critical was found in xiaoyunjie openvpn-cms-flask up to 1.2.7. This vulnerability affects the function Upload of the file app/plugins/oss/app/controller.py of the component File Upload. The manipulation of the argument image leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.2.8 is able to address this issue. The name of the patch is e23559b98c8ea2957f09978c29f4e512ba789eb6. It is recommended to upgrade the affected component.
How severe is CVE-2025-6776?: CVE-2025-6776 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2025-6776 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6776?: CVE-2025-6776 affects Xiaoyunjie Openvpn-cms-flask. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6776?: 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-2025-6776 have an EU (EUVD) identifier?: Yes. CVE-2025-6776 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19424.
When was CVE-2025-6776 published?: CVE-2025-6776 was published on 2025-06-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xiaoyunjie:openvpn-cms-flask:*:*:*:*:*:*:*:*

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