CVE-2025-6776: A vulnerability classified as critical was found in xiaoyunjie openvpn-cms-flask up to 1.2.7

Q: How do I fix CVE-2025-6776?

openvpn-cms-flask: upgrade to 1.2.8. Exact commands for each OS are on this page.

Q: Is CVE-2025-6776 being exploited?

CVE-2025-6776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-6776 affect?

CVE-2025-6776 affects openvpn-cms-flask. Severity is high (CVSS 7.3). 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

Q: How urgent is CVE-2025-6776?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.3REMOTEUPGRADE

CVE-2025-6776 is a high-severity flaw (CVSS 7.3) affecting openvpn-cms-flask. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-22
Published	2025-06-27
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: xiaoyunjie

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-27 20:15 UTCPublished CVE record published
2026-06-17 10:02 UTCUpdated Record last modified

xiaoyunjie openvpn-cms-flask UPGRADE

Affected: < 1.2.8

Fixed in: 1.2.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openvpn-cms-flask || rpm -q openvpn-cms-flask || openvpn-cms-flask --version

2. UPGRADE to 1.2.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openvpn-cms-flask

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openvpn-cms-flask

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-6776?

openvpn-cms-flask: upgrade to 1.2.8. Exact commands for each OS are on this page.

Is CVE-2025-6776 being exploited?

CVE-2025-6776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-6776 affect?

CVE-2025-6776 affects openvpn-cms-flask. Severity is high (CVSS 7.3). 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

How urgent is CVE-2025-6776?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

OpenVPN vulnerabilities · Flask vulnerabilities

Related CVEs

CVE-2025-6775 MEDIUM 6.3 UPGRADE A vulnerability classified as critical has been found in xiaoyunjie openvpn-cms-flask up to 1.2.7

References

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