Description
A template injection vulnerability in the /vip/v1/file/save component of ChanCMS v3.3.4 allows attackers to execute arbitrary code via a crafted POST request.
Affected products
chancms: chancms
References3
- gitee.com/chancms/ChanCMS Product
- www.notion.so/ChanCMS-Unauthenticated-RCE-2a3ee9235ba380fc9973e… Permissions Required
- www.notion.so/ChanCMS-Unauthenticated-RCE-2a3ee9235ba380fc9973e… Permissions Required
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 48 · as of 11 November 2026
- CWE
- CWE-94CWE-1336
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.