# CVE-2026-2146: guchengwuyue yshopmall co.yixiang.utils.FileUtil updateAvatar unrestricted upload

> Remote attackers can upload arbitrary files via the updateAvatar function in yshopmall, potentially leading to code execution.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Feb 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-9xgc-j99m-jvr5

## What is CVE-2026-2146?

CVE-2026-2146 is a medium-severity vulnerability in guchengwuyue yshopmall, published on 8 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A security flaw has been discovered in guchengwuyue yshopmall up to 1.9.1. This affects the function updateAvatar of the file /api/users/updateAvatar of the component co.yixiang.utils.FileUtil. Performing a manipulation of the argument File results in unrestricted upload. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-2146?

It affects 1 product.


Products: Guchengwuyue Yshopmall.

## How do I fix CVE-2026-2146?

No fix has been published for CVE-2026-2146 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-2146 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2146 exists.

## Other vulnerabilities in guchengwuyue yshopmall

- [CVE-2024-50648](https://insights.sbomify.com/CVE-2024-50648/): File upload in n/a (critical 9.8)
- [CVE-2025-25426](https://insights.sbomify.com/CVE-2025-25426/): SQL injection in n/a (high 7.2)
- [CVE-2025-15496](https://insights.sbomify.com/CVE-2025-15496/): guchengwuyue yshopmall jobs getPage sql injection (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-2146 and fix it if it is affected.

What it is: CVE-2026-2146 is a medium-severity vulnerability in guchengwuyue yshopmall, published on 8 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-2146 exists.

Affected product: guchengwuyue yshopmall. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-2146/ (Markdown: https://insights.sbomify.com/CVE-2026-2146/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-2146
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-2146
- OSV: https://osv.dev/vulnerability/CVE-2026-2146

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-2146/
Summaries are generated and may contain mistakes; the official description above is the record.