CVE-2026-12856
8.8 · HIGHOverview
CVE-2026-12856 is a high-severity vulnerability affecting redhat openshift_dev_spaces. It was published on June 29, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
A flaw was found in the vscode-java extension, which provides Java language support for Visual Studio Code. The extension incorrectly trusts all Markdown content in JavaDoc hovers, allowing a malicious Java file to include hidden commands. If a user clicks a specially crafted link within a JavaDoc hover popup, an attacker can execute arbitrary VS Code commands, which can lead to full system compromise in trusted workspaces.
Remediation
Check the references section for vendor advisories and patches from redhat. Update openshift_dev_spaces to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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References
Frequently Asked Questions
What is CVE-2026-12856?
CVE-2026-12856 is a high-severity vulnerability affecting redhat openshift_dev_spaces. It was published on June 29, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-12856?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-12856?
Check the references section for vendor advisories and patches from redhat. Update openshift_dev_spaces to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-12856?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-12856 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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