CVE-2026-5261: Shandong Hoteam InforCenter PLM BaseHandler.ashx uploadFileToIIS unrestricted upload

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-01 · updated 2026-10-26
Weakness: CWE-284

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.

Affected products

Shandong Hoteam InforCenter PLM: 8.3.0, 8.3.1, 8.3.2, 8.3.3, 8.3.4, 8.3.5 (+3)

References

https://my.feishu.cn/docx/ToGkdd5jwokb4PxEMkHcKrfXn3b?from=from_copylink
https://vuldb.com/submit/780725
https://vuldb.com/vuln/354450
https://vuldb.com/vuln/354450/cti

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