CVE-2026-103521 Thelia - Remote Code Execution

Thelia v2.6.0 contains a remote code execution caused by lack of executable file type validation in the document update endpoint, letting attackers with admin permissions upload malicious executables, exploit requires admin privileges.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.47% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
12 October 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update to the latest version with proper validation on document update endpoint.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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