---
title: "CVE-2026-104471: YesWiki - Unrestricted File Upload"
description: "YesWiki < 4.6.7 contains an unrestricted file upload vulnerability caused by lack of extension checks in Bazar CSV import preview, letting authenticated admins upload and execute remote PHP files, exploit requires admin authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-104471/
---

# CVE-2026-104471 YesWiki - Unrestricted File Upload

YesWiki < 4.6.7 contains an unrestricted file upload vulnerability caused by lack of extension checks in Bazar CSV import preview, letting authenticated admins upload and execute remote PHP files, exploit requires admin authentication.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-104471)

## Details

Type

Unrestricted File Upload

Impact

Remote Code Execution, File System Write

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Published

2 October 2026

Updated

15 October 2026

Weakness

[CWE-434](https://cwe.mitre.org/data/definitions/434.html)

## Vendor fix

Update to version 4.6.7 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-104471](https://nvd.nist.gov/vuln/detail/CVE-2026-104471)
- [https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v3gq-c7c6-mxw3](https://github.com/YesWiki/yeswiki/security/advisories/GHSA-v3gq-c7c6-mxw3)
- [https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unrestricted-file-upload-via-bazar-csv-import](https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-unrestricted-file-upload-via-bazar-csv-import)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

[Book a demo](https://panop.io/demo)