CVE-2026-120426
OpenCSG CSGHub through v2.6.0-ce Unauthenticated Private Repository File Read via Resolve Route
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
OpenCSG CSGHub through v2.6.0-ce contains an authorization bypass vulnerability in the unauthenticated file resolve route that allows remote attackers to read private repository files. Attackers can inject a percent-encoded current_user parameter into the file path, which the portal forwards with its server API key, to read files in private model, code or space repositories.
| CWE | CWE-639 |
| Vendor | opencsg |
| Product | csghub |
| Published | Nov 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
OpenCSG / CSGHub
0 ≤ v2.6.0-ce
References
github.com: https://github.com/OpenCSGs/csghub/issues/1586 github.com: https://github.com/OpenCSGs/csghub/blob/v2.6.0-ce/internal/routes/router.go#L302-L303 github.com: https://github.com/OpenCSGs/csghub/blob/v2.6.0-ce/internal/handlers/frontend/resolve.go#L138-L151 github.com: https://github.com/OpenCSGs/csghub/blob/v2.6.0-ce/pkg/server/backend/csghubserver/download.go#L10-L41 github.com: https://github.com/OpenCSGs/csghub-server/blob/v2.6.0-ce/api/middleware/authenticator.go#L210-L226 github.com: https://github.com/OpenCSGs/csghub/releases/tag/v2.6.0-ce hackmd.io: https://hackmd.io/@hieund/csghub-private-repo-file-read-idor vulncheck.com: https://www.vulncheck.com/advisories/opencsg-csghub-through-2.6.0-ce-unauthenticated-private-repository-file-read-via-resolve-route
Credits
hieuPenguinnn