CVE-2021-38366

HIGH 8.8CVE-2021-38366 · Published 12/08/2021 · updated 17/06/2026

In short

CVE-2021-38366 is a HIGH (CVSS 8.8) vulnerability affecting sitecore (sitecore).
Chance of exploitation in the next 30 days (EPSS): 2.9%, higher than 87.1% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
sitecore sitecore	`≤ 10.1`	No fix yet

Description

Sitecore through 10.1, when Update Center is enabled, allows remote authenticated users to upload arbitrary files and achieve remote code execution by visiting an uploaded .aspx file at an admin/Packages URL.

References

blog.istern.dk/2021/08/10/sitecore-10-authenticated-file-upload-to-rce · Exploit

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