CVE-2026-32745 in Datalore
Summary
by MITRE • 03/13/2026
In JetBrains Datalore before 2026.1 session hijacking was possible due to missing secure attribute for cookie settings
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Analysis
by VulDB Data Team • 03/13/2026
The vulnerability identified as CVE-2026-32745 affects JetBrains Datalore versions prior to 2026.1, specifically targeting session management security mechanisms within the application. This issue represents a critical weakness in the web application's authentication infrastructure that could potentially allow unauthorized users to gain access to active user sessions. The vulnerability stems from improper cookie configuration where the secure attribute is not properly implemented in session cookie settings, creating an exploitable condition that violates fundamental web security principles.
The technical flaw manifests as the absence of the secure attribute in HTTP cookies used for session management within the JetBrains Datalore platform. This attribute is essential for ensuring that cookies are only transmitted over encrypted HTTPS connections, preventing interception attacks such as man-in-the-middle attacks. Without this protection, session cookies can be transmitted over unencrypted HTTP connections, making them susceptible to eavesdropping and session hijacking attempts. The vulnerability directly maps to CWE-614, which addresses the insecure transmission of sensitive information through the use of cookies without proper security attributes, and aligns with ATT&CK technique T1566.001 related to credential access through phishing and social engineering attacks that exploit weak session management.
The operational impact of this vulnerability extends beyond simple session theft, as it could enable attackers to execute arbitrary actions within the context of affected user sessions. An attacker positioned within the network or able to intercept traffic could capture session cookies and subsequently impersonate legitimate users, potentially gaining access to sensitive data, executing unauthorized operations, or maintaining persistent access to the platform. This weakness particularly affects environments where users may be accessing the application over untrusted networks or where network traffic is not properly secured, making the attack surface significantly broader than initially apparent.
Organizations using JetBrains Datalore versions prior to 2026.1 should immediately implement mitigations including updating to the patched version 2026.1 or later, which properly implements the secure attribute for all session cookies. Additional defensive measures should include enforcing mandatory HTTPS connections, implementing proper cookie security policies, and conducting regular security assessments of web application components. The mitigation strategy should also incorporate network-level protections such as SSL/TLS inspection and monitoring for suspicious cookie transmission patterns. Security teams should also review and update their incident response procedures to address potential session hijacking scenarios, as the vulnerability creates a persistent threat vector that could remain active until proper patching and configuration updates are implemented across all affected systems.