CVE-2026-5261 Shandong Hoteam InforCenter PLM BaseHandler.ashx uploadFileToIIS unrestricted upload
Remote attackers can upload malicious files via the uploadFileToIIS function in Shandong Hoteam InforCenter PLM, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-5261?
CVE-2026-5261 is a medium-severity vulnerability in Shandong Hoteam InforCenter PLM, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in Shandong Hoteam InforCenter PLM up to 8.3.8. The impacted element is the function uploadFileToIIS of the file /Base/BaseHandler.ashx. The manipulation of the argument File leads to unrestricted upload. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-5261?
How do I fix CVE-2026-5261?
No fix has been published for CVE-2026-5261 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-5261 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5261 exists.
Sources
Also known as GHSA-m245-c8r9-78c2.