{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-12856 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-12856 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-12856 is a high-severity command injection vulnerability in Red Hat OpenShift Dev Spaces 3.29, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-12856 and fix it if it is affected.\n\nWhat it is: CVE-2026-12856 is a high-severity command injection vulnerability in Red Hat OpenShift Dev Spaces 3.29, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-12856 in the wild and no public exploit code.\n\nAffected product: Red Hat OpenShift Dev Spaces 3.29. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-12856/ (Markdown: https://insights.sbomify.com/CVE-2026-12856/index.md)","id":"CVE-2026-12856","markdown":"https://insights.sbomify.com/CVE-2026-12856/index.md","name":"CVE-2026-12856","record":{"aliases":["GHSA-7vqr-7r5j-c84j"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"VS Code Java extension","requires_auth":"none","summary":"Attackers can execute arbitrary VS Code commands via malicious JavaDoc links, potentially leading to full system compromise in trusted workspaces.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"openshift_dev_spaces","vendor":"redhat"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-88","name":"Improper Neutralization of Argument Delimiters in a Command"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Vscode-java: vscode: command injection vulnerability in the javadoc hover provider of the vscode-java extension","id":"CVE-2026-12856","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Local privilege escalation vulnerability in ESET AV Remover","id":"CVE-2026-12858"},"packages":[],"prev":{"headline":"H19WMIHandlerSmm: unvalidated memory boundary could result in arbitrary code execution.","id":"CVE-2026-12855"},"products":["Red Hat OpenShift Dev Spaces 3.29"],"published":"2026-06-29","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["Red Hat"]},"summary":"Attackers can execute arbitrary VS Code commands via malicious JavaDoc links, potentially leading to full system compromise in trusted workspaces.","url":"https://insights.sbomify.com/CVE-2026-12856/"}