Vulnerability-Lookup

GHSA-7VQR-7R5J-C84J

Vulnerability from github – Published: 2026-06-29 15:32 – Updated: 2026-06-30 03:37

Details

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.

Severity

8.8 (High)


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

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    "severity": "HIGH"
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  "id": "GHSA-7vqr-7r5j-c84j",
  "modified": "2026-06-30T03:37:14Z",
  "published": "2026-06-29T15:32:05Z",
  "references": [
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    },
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}

CVE-2026-12856 (GCVE-0-2026-12856)

Vulnerability from cvelistv5 – Published: 2026-06-29 12:33 – Updated: 2026-06-30 12:06

Title

Vscode-java: vscode: command injection vulnerability in the javadoc hover provider of the vscode-java extension

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-88 - Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Assigner

redhat

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-12856	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2491278	issue-trackingx_refsource_REDHAT
https://github.com/redhat-developer/vscode-java/s…
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex

Impacted products

1 product

Vendor	Product	Version
Red Hat	Red Hat OpenShift Dev Spaces	cpe:/a:redhat:openshift_devspaces:3

Date Public

2026-06-29 12:25

Credits

Red Hat would like to thank byte256 for reporting this issue.

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-7VQR-7R5J-C84J

CVE-2026-12856 (GCVE-0-2026-12856)

Tags

Sightings

Nomenclature