CVE-2026-104471

YesWiki before 4.6.7 contains an unrestricted file upload vulnerability that allows authenticated admins to write remote files into the web-accessible files/ directory via Bazar CSV import preview. Attackers can import a CSV whose file or image field references a remote .php URL, which is saved without extension checks and executed as server-side code.

Score

CVSS 4.0 8.6 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-10-02

Last modified

2026-10-02

Weaknesses

CWE-434

Affected products

• Yeswiki (Yeswiki)

References

• 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