CVE-2025-54527: JetBrains YouTrack Widget Sandbox Iframe Configuration Vulnerability
Stay informed about a recently discovered security vulnerability in JetBrains YouTrack that could potentially expose your instance to unwanted risks.
🔍 TL;DR Summary
A vulnerability identified as CVE-2025-54527 affects JetBrains YouTrack. Improper iframe configuration within the widget sandbox allows popups to bypass security restrictions, potentially leading to malicious activity. This impacts versions before 2025.2.86935, 2025.2.87167, 2025.3.87341, and 2025.3.87344. Upgrade to a patched version to mitigate this risk.
🚨 Vulnerability Details
- CVE ID: CVE-2025-54527
- Description: Improper iframe configuration in the widget sandbox of JetBrains YouTrack allows popups to bypass security restrictions.
- CVSS Score: 6.1 (Medium)
- CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS Explanation: This vulnerability has a CVSS score of 6.1, indicating a medium severity. An attacker can potentially exploit this by enticing a user to interact with a crafted webpage or widget. Successful exploitation could lead to limited impact on confidentiality and integrity.
- Exploit Requirements: Requires user interaction (e.g., clicking a link).
- Affected Vendor: JetBrains
- Affected Product: YouTrack
- Affected Versions: Versions before 2025.2.86935, 2025.2.87167, 2025.3.87341, and 2025.3.87344.
- CWE: CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
- CWE Explanation: This CWE refers to situations where an application fails to properly restrict what can be rendered within UI layers or frames. In this case, the improper iframe configuration allowed popups to bypass intended security restrictions.
📅 Timeline of Events
- 2025-07-28: CVE Published.
🧠 Exploitability & Real-World Risk
While user interaction is required to trigger the vulnerability, the ease of creating malicious widgets and enticing users to interact with them means the real-world risk is significant. An attacker could embed malicious code within a seemingly harmless widget, leading to potential data theft or other harmful actions when a user interacts with it.
🛠️ Recommendations
- Upgrade: Upgrade your JetBrains YouTrack instance to the latest version (2025.2.86935, 2025.2.87167, 2025.3.87341, 2025.3.87344 and later) to apply the necessary security patches.
- Review Widgets: Regularly review installed widgets from untrusted sources.
- Security Best Practices: Follow JetBrains' security best practices for YouTrack configuration.
🧪 Technical Insight
The vulnerability stems from insufficient security configurations on iframes used within YouTrack's widget sandbox. By not adequately restricting the capabilities of these iframes, attackers can inject code that allows popups to bypass security measures intended to isolate widgets from the main application. This bypass allows attackers to execute potentially malicious scripts and interact with the user in unexpected ways.
🙌 Credit to Researcher(s)
The vulnerability was reported to JetBrains through their responsible disclosure program. The specific researcher is not named in the initial CVE.
🔗 References
🧵 Tags
JetBrains, YouTrack, CVE-2025-54527, Iframe, Sandbox, Security, Widget, Popup
Summary: A vulnerability in JetBrains YouTrack's widget sandbox allows popups to bypass security restrictions due to improper iframe configuration. Update your YouTrack instance to a patched version to mitigate this risk.
CVE ID: CVE-2025-54527
Risk Analysis: Successful exploitation could lead to unauthorized access to user data, potentially damaging the reputation and trust associated with the YouTrack instance.
Recommendation: Upgrade your JetBrains YouTrack instance to the latest version to apply the necessary security patches.
Timeline
- 2025-07-28: CVE Published