VDB

CVE-2026-12856

CVE-2026-12856 PUBLISHED CVSS 8.8 HIGH

Reported by redhat · Published June 29, 2026

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.

Risk Scores

CVSS 3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Products

VendorProductVersions
Red HatRed Hat OpenShift Dev Spaces 3.291782989367
Red HatRed Hat OpenShift Dev Spaces
Red HatRed Hat OpenShift Dev Spaces 3.29
Red HatRed Hat OpenShift Dev Spaces
Red HatRed Hat OpenShift Dev Spaces 3.291782989367
Red HatRed Hat OpenShift Dev Spaces 3.291782989367

Timeline

  • Jun 29, 2026 CVE Published
  • Jun 30, 2026 EPSS Score
  • Jun 30, 2026 Coalition ESS Score
  • Jul 10, 2026 Distribution Patch
  • Jul 10, 2026 Security Advisory
  • Aug 7, 2026 EPSS Score
  • Aug 24, 2026 EPSS Score
  • Aug 26, 2026 EPSS Score
  • Aug 30, 2026 EPSS Score
  • Sep 3, 2026 EPSS Score
  • Sep 5, 2026 EPSS Score
  • Sep 6, 2026 EPSS Score

References

Open in Interactive Console →
$ Console Community · 50/day Open console ›