CVE-2025-32370: xperience File Upload RCE — Exploit

Description

Kentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenticated uploads; however, because .zip is processed through TryZipProviderSafe, there is additional functionality to create files with other extensions. NOTE: this is a separate issue not necessarily related to SVG or XSS.

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

Weakness Type (CWE)

CWE-912 CWE-912

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
kentico	xperience	< 13.0.178

References

Exploits

https://labs.watchtowr.com/xss-to-rce-by-abusing-custom-file-handlers-kentico-xperience-cms-cve-2025-2748/ https://labs.watchtowr.com/xss-to-rce-by-abusing-custom-file-handlers-kentico-xperience-cms-cve-2025-2748/

Other References

https://devnet.kentico.com/download/hotfixes

Frequently Asked Questions

What is CVE-2025-32370? +

Kentico Xperience before 13.0.178 has a specific set of allowed ContentUploader file extensions for unauthenticated uploads; however, because .zip is processed through TryZipProviderSafe, there is additional functionality to create files with other extensions. NOTE: this is a separate issue not necessarily related to SVG or XSS. It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2025-32370? +

CVE-2025-32370 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-32370? +

CVE-2025-32370 affects products from kentico, specifically: xperience. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32370? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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