CVE-2026-50770 in Cognitive Search
Summary
by MITRE • 08/17/2026
An issue in Squirro Cognitive Search before v.3.14.2 allows a remote attacker to escalate privileges via a crafted request.
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Analysis
by VulDB Data Team • 08/17/2026
The vulnerability identified within Squirro Cognitive Search prior to version 3.14.2 represents a critical security flaw that enables privilege escalation through the exploitation of an improperly secured application interface. This issue stems from insufficient access control mechanisms or logic errors in how the software processes incoming requests, allowing unauthorized users to manipulate system behavior beyond their assigned permissions. In enterprise search environments where data sensitivity and user roles are strictly defined, such a lapse poses significant risks to both confidentiality and integrity of stored information. The core technical flaw likely involves inadequate validation of user credentials or session tokens during request processing, which permits an attacker to bypass authentication checks or exploit misconfigured role-based access controls to execute actions reserved for higher-privileged accounts.
From an operational perspective, the ability to escalate privileges remotely means that a threat actor with basic network connectivity can gain administrative-level access without needing physical proximity or prior high-level credentials. This capability fundamentally undermines the security model of the deployment environment. Once elevated privileges are obtained, the attacker may exfiltrate sensitive search indexes, modify system configurations, inject malicious content into search results, or use the compromised server as a pivot point for further attacks against internal networks. The impact extends beyond immediate data theft to include potential denial of service through resource exhaustion and long-term persistence via backdoor installation if the elevated access allows modification of application binaries or configuration files.
This vulnerability aligns with Common Weakness Enumeration (CWE) categories such as CWE-269, which addresses Improper Privilege Control, indicating that the software fails to enforce appropriate separation between different user roles and permissions. Additionally, it maps to MITRE ATT&CK techniques related to Initial Access and Defense Evasion, specifically those involving exploitation of application logic flaws or abuse of authentication mechanisms. Attackers typically leverage such weaknesses by crafting specific HTTP requests with manipulated parameters, headers, or payloads that trick the server into treating a low-privileged request as one from an administrator. The lack of robust input validation and session management in earlier versions creates this attack surface, where malformed but syntactically correct requests can trigger unintended code paths leading to privilege elevation.
Mitigation strategies must prioritize immediate patching to version 3.14.2 or later, which contains the necessary fixes for these access control deficiencies. Organizations should also implement network-level segmentation to restrict direct internet-facing exposure of Squirro instances where possible, ensuring that only authorized subnets can interact with the search engine API. Enabling comprehensive logging and monitoring is essential to detect anomalous request patterns indicative of privilege escalation attempts, such as repeated failed authentication followed by successful high-privilege actions. Furthermore, adopting a principle of least privilege across all user accounts within the Squirro ecosystem reduces the blast radius should any single account be compromised. Regular security assessments and penetration testing focused on access control logic will help identify similar vulnerabilities before they can be exploited in production environments.