Vulnerability details

CVE-2026-80050

continew-org continew-admin

ContiNew Admin through 4.1.0 Missing Authorization and File-Type Allowlist on Multipart Upload Endpoints

CVSS 4.0

7.1High

Official description

ContiNew Admin fails to apply file-upload permission checks or file-type allowlist validation to multipart upload endpoints, allowing authenticated users to store files with arbitrary extensions. Attackers can initialize chunked uploads, send file parts, and complete uploads to leave arbitrary files in the storage backend accessible via web server URLs.

CVSS scores

Score	Version	Source	Vector
7.1High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`
6.5Medium	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`

Affected products

Vendor	Product	Versions	Source
continew-org	continew-admin	v ≤ 4.1.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/continew-org/continew-admin product
https://github.com/continew-org/continew-admin/blob/v4.1.0/continew-system/src/main/java/top/continew/admin/system/controller/MultipartUploadController.java technical-description
https://www.vulncheck.com/advisories/continew-admin-through-4.1.0-missing-authorization-and-file-type-allowlist-on-multipart-upload-endpoints third-party-advisory
https://github.com/continew-org/continew-admin/issues/221 issue-tracking

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Details

Published: 2026-08-25
Last updated: 2026-08-26
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

0.3%

Probability of exploitation in 30 days

22.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Partial

Weaknesses (CWE)

CWE-434
Unrestricted Upload of File with Dangerous Type