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CVE-2025-6776

27
FAUCET Score

CVE-2025-6776 is a critical path traversal vulnerability affecting xiaoyunjie openvpn-cms-flask versions up to 1.2.7. Specifically, the "Upload" function within the app/plugins/oss/app/controller.py component is susceptible to manipulation of the 'image' argument. This vulnerability carries a CVSS score of 9.8 (Critical), indicating it can be exploited remotely with low attack complexity, leading to high impacts on confidentiality, integrity, and availability. While the exploit has been publicly disclosed, there is currently no evidence of active exploitation, nor are there known Metasploit or Nuclei modules, and community discussion is minimal. Upgrading to version 1.2.8 or applying patch e23559b98c8ea2957f09978c29f4e512ba789eb6 is recommended to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.8CPE matchmatch criteria
cpe:2.3:a:xiaoyunjie:openvpn-cms-flask:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

5.5MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.62%
Probability of exploitation in next 30 days
EPSS Percentile
45.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0062 is in the 26th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / xiaoyunjie/openvpn-cms-flask/commit/e23559b98c8ea2957f09978c29f4e512ba789eb6
Patch
github.com / xiaoyunjie/openvpn-cms-flask/issues/23
ExploitIssue TrackingVendor Advisory
github.com / xiaoyunjie/openvpn-cms-flask/releases/tag/v1.2.8
Release Notes
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry