CMS: Improper Access Control
CVE-2025-11136 is a high-severity improper access control vulnerability in CMS from YiFang, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected CMS versions: 2.0.0; 2.0.1; 2.0.2. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.4% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of CMS you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| YiFang | CMS | 2.0.0; 2.0.1; 2.0.2 | Not stated |
| Wanglongcn | Yifang | 2.0.2 and earlier | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 2.0 | Low | CNA (vuldb.com) |
| CVSS 3.1 | 4.7 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 7.2 | High | NVD |
| CVSS 2.0 | 5.8 | Medium | CNA (vuldb.com) |
Official description
A flaw has been found in YiFang CMS up to 2.0.2. The impacted element is the function webUploader of the file app/app/controller/File.php of the component Backend. Executing manipulation of the argument uploadpath can lead to unrestricted upload. The attack can be launched remotely. The exploit has been published and may be used.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?id.326213Third Party Advisory, VDB Entry
- vuldb.com/?submit.657903Third Party Advisory, VDB Entry
Technical write-ups (may include proof of concept)
- github.com/electroN1chahaha/YifangCMS-V2.0.0-Remote-Code-Execution-RCE-/issues/1Exploit, Issue Tracking
Other references
- vuldb.com/?ctiid.326213Permissions Required, VDB Entry
Other vulnerabilities in CMS
- 8.8 High severity
- 8.8 High severity
- 7.5 High severity
- 7.2 High severity
Recent Improper Access Control vulnerabilities
- 9.8 Critical severity
- 7.5 High severity
- 7.2 High severity
- 8.8 High severity
- 8.2 High severity
- 7.5 High severity
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