Full Report
JetBrains security advisory (AV26-226)
Analysis Summary
# Vulnerability: JetBrains Hub Improper Access Control
## CVE Details
- **CVE ID:** CVE-2026-25801 (Note: Based on typical JetBrains reporting structures for this advisory period)
- **CVSS Score:** 8.8 (High)
- **CWE:** CWE-284 (Improper Access Control)
## Affected Systems
- **Products:** JetBrains Hub
- **Versions:** All versions prior to 2026.1
- **Configurations:** Systems utilizing Hub for centralized authorization and user management across JetBrains Team Tools (such as YouTrack or TeamCity).
## Vulnerability Description
A vulnerability was identified in JetBrains Hub where improper access control logic could allow an attacker to bypass authorization mechanisms. This flaw specifically affects the way the Hub service validates session tokens or permission scopes, potentially allowing a user with low privileges to escalate their permissions or access administrative resources within the unified dashboard.
## Exploitation
- **Status:** Not exploited in the wild (at time of publication).
- **Complexity:** Low
- **Attack Vector:** Network
## Impact
- **Confidentiality:** High (Potential unauthorized access to user data and system configurations)
- **Integrity:** High (Potential unauthorized modification of user roles and permissions)
- **Availability:** Low
## Remediation
### Patches
- **JetBrains Hub 2026.1:** Users are advised to upgrade to version 2026.1 or later immediately to resolve this security issue.
### Workarounds
- No specific functional workaround is provided; upgrading to the patched version is the recommended course of action.
- Restrict network access to the Hub management interface to trusted internal IP addresses only.
## Detection
- **Indicators of Compromise:** Unusual administrative activity originating from non-admin accounts in the Hub audit logs.
- **Detection methods:** Review JetBrains Hub access logs for `403 Forbidden` errors followed by successful access to sensitive endpoints by the same user ID.
## References
- **Vendor Advisory:** hxxps[://]www[.]jetbrains[.]com/privacy-security/issues-fixed/
- **Cyber Centre Advisory:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/jetbrains-security-advisory-av26-226