CVE-2026-7195: Progress Sitefinity Input Validation Flaw Enables Account Compromise

Technical summary

CVE-2026-7195 is a CWE-20 input validation bypass in Progress Sitefinity web services. The vulnerability permits remote, unauthenticated account compromise through a vector that requires user interaction (CVSS UI:R). The attack surface is the network-accessible web service layer; successful exploitation grants unauthorized access to user account integrity and confidentiality. Affected versions span three major releases (14.x and 15.x) across multiple patch levels. Non-default site configuration is a prerequisite, suggesting the flaw manifests under specific middleware or integration setups rather than out-of-box installations.

Business impact

Account compromise of Sitefinity end-users poses immediate confidentiality and integrity risks. Attackers gain the ability to impersonate legitimate users, access sensitive data within user profiles, and potentially modify or delete content. For organizations running Sitefinity-powered portals, intranets, or customer-facing sites, this translates to reputational damage, regulatory reporting obligations (GDPR, CCPA, etc.), and loss of customer trust. The need for user interaction—typically via social engineering—extends the attack timeline and reduces the likelihood of mass exploitation, but does not eliminate the risk for targeted campaigns.

Affected systems

Progress Sitefinity versions 14.1.x through 15.4.x are in scope, with specific vulnerable ranges: 14.1.x–14.3.x (all), 14.4.x before 14.4.8152, 15.0.x before 15.0.8234, 15.1.x before 15.1.8335, 15.2.x before 15.2.8441, 15.3.x before 15.3.8531, and 15.4.x before 15.4.8630. Organizations must verify their exact patch level and site configuration. Sitefinity instances deployed in non-default configurations (custom authentication schemes, third-party integrations, or custom web service endpoints) are most likely to be vulnerable.

Exploitability

Exploitability is moderate-to-high. The flaw requires no authentication and is reachable over the network, but exploitation mandates user interaction—typically a user clicking a malicious link or submitting a crafted request. The non-default configuration requirement further narrows the practical target set. No publicly known active exploitation has been reported. The barrier to weaponization is low for attackers with knowledge of vulnerable site configurations, but detection and blocking are feasible via web application firewalls tuned to recognize invalid input patterns in affected service endpoints.

Remediation

Apply vendor patches to reach patched versions: 14.4.8152 or later (14.4.x), 15.0.8234 or later (15.0.x), 15.1.8335 or later (15.1.x), 15.2.8441 or later (15.2.x), 15.3.8531 or later (15.3.x), and 15.4.8630 or later (15.4.x). For versions 14.1.x and 14.3.x, upgrade to a supported version if available; consult Progress support for extended support or backport options. Interim controls include restricting network access to Sitefinity web services, disabling non-essential service endpoints, and implementing input validation rules at the WAF or API gateway layer.

Patch guidance

Progress has released patch versions for all affected branches; check the vendor advisory for exact build numbers and download links. Plan patching in a phased approach: prioritize production instances first, then staging and development. Verify patch installation by confirming the build number post-update. Test affected web service functionality in a non-production environment before production deployment to rule out compatibility issues with custom integrations. Patch availability and deployment windows should be coordinated with any dependent applications or third-party services consuming Sitefinity APIs.

Detection guidance

Monitor web service endpoints for malformed or unexpected input patterns, particularly in authentication and account-related service calls. Implement input validation logging and alerting at the application or API gateway level. Hunt for account access anomalies: unusual login locations, failed authentication attempts followed by successful access from different IPs, and account modifications by non-owner principals. Review access logs for suspicious patterns targeting non-default web service endpoints. Organizations using Sitefinity intrusion detection or WAF rules should enable or update CWE-20 specific signatures; consult Sitefinity security documentation for recommended rule sets.

Why prioritize this

Although user interaction is required, account compromise severity is high, affecting confidentiality and integrity of critical identity data. The broad version range (14.1.x through 15.4.x) and the prevalence of Sitefinity in enterprise portal environments elevate organizational exposure. Non-default configuration requirement should not defer patching—many production Sitefinity deployments employ custom configurations. Patch availability and relative ease of application make this a strong candidate for expedited remediation within a 30–60 day window.

Risk score, explained

CVSS 8.8 (HIGH) reflects high-impact account compromise (C:H, I:H, A:H) via a network-accessible service without authentication (AV:N, PR:N). User interaction (UI:R) and non-default configuration constraints lower the score from critical but do not reduce the underlying severity. The absence of scope elevation (S:U) indicates the impact is confined to the user's account rather than lateral system compromise. For security leaders, this score warrants prompt patching and interim controls, but does not demand emergency response procedures.

Frequently asked questions