CVE-2026-104471 YesWiki before 4.6.7 Unrestricted File Upload via Bazar CSV Import
Authenticated admins can upload malicious PHP files via Bazar CSV import, leading to remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104471?
CVE-2026-104471 is a high-severity vulnerability in yeswiki, published on 2 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-434
Which versions are affected by CVE-2026-104471?
How do I fix CVE-2026-104471?
No fix has been published for CVE-2026-104471 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-104471 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104471 exists.
Sources
Also known as GHSA-g4m2-8g7g-xw8c, GHSA-v3gq-c7c6-mxw3.