Full Report
JetBrains security advisory (AV26-623)
Analysis Summary
# Vulnerability: Multiple JetBrains Product Security Updates (June 2026)
## CVE Details
*Note: The primary advisory (AV26-623) lists multiple vulnerabilities across JetBrains products. Specific CVE IDs vary based on the exact flaw patched during this period.*
- **CVE ID:** [Pending/Multiple] (Cross-reference needed with JetBrains Security Bulletin)
- **CVSS Score:** Critical/High (Based on advisory classification)
- **CWE:** Often includes CWE-79 (XSS), CWE-200 (Information Exposure), or CWE-287 (Improper Authentication) for these product suites.
## Affected Systems
- **Products:**
- JetBrains YouTrack
- JetBrains Hub
- **Versions:** Multiple versions prior to June 19, 2026.
- **Configurations:** Standalone and Server-based installations of YouTrack and Hub.
## Vulnerability Description
JetBrains released a series of security updates addressing multiple flaws in their project management (YouTrack) and identity/access management (Hub) platforms. While specific technical deep-dives for this specific date range are consolidated under their "Fixed Security Issues" tracker, typical vulnerabilities in these products involve unauthorized access to project data, potential for cross-site scripting (XSS) within task descriptions, or improper handling of authentication tokens between Hub and integrated IDEs.
## Exploitation
- **Status:** Not currently reported as exploited in the wild (as of June 22, 2026).
- **Complexity:** Low to Medium.
- **Attack Vector:** Network (Typically exploitable via a web browser).
## Impact
- **Confidentiality:** High (Potential exposure of private project data, tickets, and user credentials).
- **Integrity:** High (Potential unauthorized modification of project tasks or system settings).
- **Availability:** Medium (Potential for service disruption).
## Remediation
### Patches
JetBrains highly recommends updating to the latest stable releases of the following:
- **YouTrack:** Update to the most recent version released on or after June 19, 2026.
- **Hub:** Update to the most recent version released on or after June 19, 2026.
### Workarounds
- Ensure these instances are not exposed directly to the public internet without a VPN or restricted IP access.
- Disable guest access in YouTrack settings until patches are applied.
## Detection
- **Detection methods and tools:**
- Verify product versions currently running against the JetBrains security portal.
- Monitor server access logs for unusual patterns of API requests or unauthorized access attempts to internal project pages.
- Check the `logs` directory in the Hub/YouTrack installation for error messages related to authentication failures or validation errors.
## References
- JetBrains Fixed Security Issues: hxxps[://]www[.]jetbrains[.]com/privacy-security/issues-fixed/
- Cyber Centre Advisory AV26-623: hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/jetbrains-security-advisory-av26-623