Full Report
JetBrains security advisory (AV26-891)
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in JetBrains Products (September 2026)
## CVE Details
*Note: The provided source identifies the advisory (AV26-891) but does not list specific CVE IDs. Users should refer to the JetBrains "Fixed security issues" portal for individual tracking numbers.*
- **CVE ID:** Pending/Multiple (Refer to JetBrains Fixed Security Issues portal)
- **CVSS Score:** Not specified in advisory (Severity: High/Critical based on typical JetBrains security bulletins)
- **CWE:** Not specified
## Affected Systems
- **Products:**
- GoLand
- Hub
- IntelliJ IDEA
- YouTrack
- **Versions:**
- GoLand: Prior to 2026.2.2.1
- Hub: Prior to 2026.2.52442
- IntelliJ IDEA: Prior to 2026.2.2
- YouTrack: Multiple versions (Specific versions listed in vendor portal)
- **Configurations:** Standard installations of the IDEs and collaboration tools listed above.
## Vulnerability Description
Technical details for these specific releases are currently restricted by JetBrains to allow users time to patch. Historically, these advisories address flaws such as Improper Access Control, Path Traversal, or Remote Code Execution (RCE) within the IDE's core or integrated plugins.
## Exploitation
- **Status:** Not specified (Assume PoC may be developed following version diffing)
- **Complexity:** Not specified
- **Attack Vector:** Network (Typically requires interaction with malicious project files or remote server access for Hub/YouTrack)
## Impact
- **Confidentiality:** Potential High (Access to source code and intellectual property)
- **Integrity:** Potential High
- **Availability:** Potential High
## Remediation
### Patches
JetBrains has released the following security updates:
- **GoLand:** Update to version **2026.2.2.1** or later.
- **Hub:** Update to version **2026.2.52442** or later.
- **IntelliJ IDEA:** Update to version **2026.2.2** or later.
- **YouTrack:** Update to the latest stable release provided on the JetBrains download page.
### Workarounds
- **Isolate Hub/YouTrack:** Ensure these services are behind a VPN or firewall and not exposed to the public internet if updates cannot be applied immediately.
- **IDE Caution:** Avoid opening untrusted projects or cloning repositories from unknown sources until the IDE is updated.
## Detection
- **Version Auditing:** Verify installed versions of JetBrains Toolbox or standalone IDEs against the "Fixed" versions listed above.
- **Log Monitoring:** Monitor Hub and YouTrack logs for unusual authentication patterns or unauthorized file access requests.
## References
- **Vendor advisories:** hxxps[://]www[.]jetbrains[.]com/privacy-security/issues-fixed/
- **Canadian Centre for Cyber Security:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/jetbrains-security-advisory-av26-891