EUVD-2026-67323
GHSA-f6hh-58p2-7rx3
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Upload requires any authenticated session (PR:L); no special conditions (AC:L); full C/I/A justified by arbitrary upload enabling webshell and anonymous download exposing stored data.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
4DescriptionCVE.org
The storage endpoint /storage/upload of cjbi admin3 v3.0.0 are missing permission checks. /Any logged-in user can upload arbitrary files, and any anonymous attacker can download them.
AnalysisAI
Missing authorization on the /storage/upload endpoint in cjbi admin3 v3.0.0 permits any authenticated user - regardless of role or privilege level - to upload arbitrary files to the server. Compounding this, the storage endpoint exposes uploaded files for unauthenticated anonymous download, creating a two-stage attack surface: an authenticated insider or low-privilege account uploads a malicious payload, which any external anonymous actor can then retrieve. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Upload exploitation requires a valid authenticated session with any privilege level in cjbi admin3 v3.0.0 - there is no role or permission requirement beyond being logged in (CVSS PR:L confirms this). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS scores this at 8.8 High, driven by full C/I/A impact and network accessibility, which accurately reflects the potential for arbitrary file upload enabling webshell deployment or data exposure. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all cjbi admin3 v3.0.0 instances and restrict network access to the /storage/upload endpoint to prevent new uploads; review upload logs for suspicious activity. …
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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