CVE-2026-33392
Published: 17 April 2026
Summary
CVE-2026-33392 is a high-severity Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336) vulnerability in Jetbrains Youtrack. Its CVSS base score is 7.2 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 0.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly mitigates the sandbox bypass vulnerability by requiring timely patching of JetBrains YouTrack to version 2025.3.131383 or later.
Detects the presence of the vulnerable YouTrack version through automated vulnerability scanning, enabling preemptive remediation.
Limits the privileges available to high-privileged users (PR:H), reducing the scope and impact of potential RCE exploitation via sandbox bypass.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
RCE via sandbox bypass in internet-facing YouTrack server directly enables T1190 (public-facing app exploitation) and T1068 (privilege escalation from high-priv app account to OS-level code execution).
NVD Description
In JetBrains YouTrack before 2025.3.131383 high privileged user can achieve RCE via sandbox bypass
Deeper analysisAI
CVE-2026-33392 is a remote code execution (RCE) vulnerability in JetBrains YouTrack versions prior to 2025.3.131383, stemming from a sandbox bypass. It is classified under CWE-1336 and carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). The flaw enables a high-privileged user to execute arbitrary code on the affected system.
A high-privileged user (PR:H) can exploit this vulnerability over the network (AV:N) with low complexity (AC:L) and without requiring user interaction (UI:N). Successful exploitation results in high impacts to confidentiality, integrity, and availability (C:H/I:H/A:H) within the unchanged security scope (S:U), allowing full RCE on the YouTrack server.
JetBrains has documented the issue and fix on their privacy and security issues fixed page at https://www.jetbrains.com/privacy-security/issues-fixed/. Mitigation involves updating to YouTrack version 2025.3.131383 or later.
Details
- CWE(s)