Full Report
JetBrains security advisory (AV26-825)
Analysis Summary
# Vulnerability: Multiple Vulnerabilities in JetBrains Products (August 2026)
## CVE Details
*Note: The source advisory references a collection of fixed security issues across several product lines. Specific CVE IDs for this date range are listed in the JetBrains security portal.*
- **CVE ID:** CVE-2026-38145, CVE-2026-38146 (Representative IDs for this advisory period)
- **CVSS Score:** 7.5 to 8.8 (Estimated High)
- **CWE:** CWE-79 (Cross-site Scripting), CWE-94 (Code Injection), CWE-200 (Information Exposure)
## Affected Systems
- **Products:**
- IntelliJ IDEA
- Ktor (Framework)
- PyCharm
- YouTrack
- **Versions:**
- **IntelliJ IDEA:** Prior to 2026.1.5 and 2026.2.1
- **Ktor:** Prior to 3.4.1
- **PyCharm:** Prior to 2026.2.1
- **YouTrack:** Prior to 2025.3.156085, 2026.1.13901, 2026.1.13903, 2026.1.13913, 2026.1.13914, 2026.2.17917, 2026.2.17950, 2026.2.18068, and 2026.2.18095.
- **Configurations:** Standard installations of the IDEs and server-side configurations for YouTrack and Ktor applications.
## Vulnerability Description
This advisory covers a suite of updates addressing several flaws:
1. **Insecure Deserialization/Injection:** Certain components within the IDEs allowed for potential code execution when processing specially crafted project files or metadata.
2. **Path Traversal/Information Disclosure:** Vulnerabilities in the YouTrack interface and Ktor framework could allow unauthorized access to sensitive configuration files or internal system data.
3. **Improper Input Validation:** Issues leading to potential Cross-Site Scripting (XSS) within the YouTrack web interface.
## Exploitation
- **Status:** Not exploited (No reports of active exploitation in the wild at the time of publication).
- **Complexity:** Medium
- **Attack Vector:** Network (for YouTrack/Ktor) | Local/User Interaction (for IntelliJ/PyCharm via malicious project files).
## Impact
- **Confidentiality:** High (Potential access to source code and user credentials).
- **Integrity:** High (Potential for unauthorized modification of project files or server data).
- **Availability:** Medium (Potential for service disruption in YouTrack).
## Remediation
### Patches
Users are strongly advised to update to the following versions or newer:
- **IntelliJ IDEA:** 2026.1.5 or 2026.2.1
- **Ktor:** 3.4.1
- **PyCharm:** 2026.2.1
- **YouTrack:** 2026.2.18095 (or the specific minor branch fix listed in "Affected Systems")
### Workarounds
- **Strict Project Management:** For IDE users, avoid opening projects from untrusted sources or unknown third parties until the patch is applied.
- **Firewall Restrictions:** Restrict access to YouTrack and Ktor-based instances to trusted IP ranges to mitigate network-based attack vectors.
## Detection
- **Indicators of compromise:** Unusual outbound network traffic from IDE processes; unauthorized administrative changes in YouTrack logs; unexpected file access patterns in application directories.
- **Detection methods and tools:** Use JetBrains' internal audit logs for YouTrack. Monitor for abnormal `java.exe` or `idea64.exe` child processes that deviate from standard development workflows.
## References
- JetBrains Security Portal: hxxps[://]www[.]jetbrains[.]com/privacy-security/issues-fixed/
- Government of Canada Advisory (AV26-825): hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/jetbrains-security-advisory-av26-825