guchengwuyue yshopmall up to 1.9.1 co.yixiang.utils.FileUtil /api/users/updateAvatar File unrestricted upload
Summary
A vulnerability classified as critical was found in guchengwuyue yshopmall up to 1.9.1. This impacts the function updateAvatar of the file /api/users/updateAvatar of the component co.yixiang.utils.FileUtil. Executing a manipulation of the argument File can lead to unrestricted upload.
This vulnerability appears as CVE-2026-2146. The attack may be performed from remote. In addition, an exploit is available.
The project was informed of the problem early through an issue report but has not responded yet.
Details
A vulnerability has been found in guchengwuyue yshopmall up to 1.9.1 and classified as critical. This vulnerability affects the function updateAvatar of the file /api/users/updateAvatar of the component co.yixiang.utils.FileUtil. The manipulation of the argument file with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability.
The advisory is shared for download at github.com. This vulnerability was named CVE-2026-2146. The exploitation appears to be easy. The attack can be initiated remotely. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1608.002.
It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5803). VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Vendor
Name
Version
Website
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔒VulDB Reliability: 🔍
CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒
CVSSv3
VulDB Meta Base Score: 7.1VulDB Meta Temp Score: 6.9
VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔒
CNA Base Score: 6.3
CNA Vector: 🔒
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Exploiting
Class: Unrestricted uploadCWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒
Physical: No
Local: No
Remote: Yes
Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
EPSS Score: 🔒
EPSS Percentile: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔒
Timeline
02/07/2026 Advisory disclosed02/07/2026 VulDB entry created
02/18/2026 VulDB entry last update
Sources
Product: github.comAdvisory: 40
Status: Not defined
CVE: CVE-2026-2146 (🔒)
GCVE (CVE): GCVE-0-2026-2146
GCVE (VulDB): GCVE-100-344848
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 02/07/2026 08:55Updated: 02/18/2026 02:23
Changes: 02/07/2026 08:55 (59), 02/08/2026 11:26 (30), 02/09/2026 06:56 (1), 02/18/2026 02:23 (12)
Complete: 🔍
Submitter: mukyuuhate
Cache ID: 216::103
Submit
Accepted
- Submit #747409: https://github.com/guchengwuyue/yshopmall yshopmall V1.9.1 Incomplete Identification of Uploaded File Variables (by mukyuuhate)
VulDB is the best source for vulnerability data and more expert information about this specific topic.
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