CVE-2026-112942: Command injection via improper file path validation
CVE-2026-112942 key facts
- CISA KEV
- Not listed (catalogue checked )
- Highest advisory rating
- Critical
- CVSS base score
- 8.8 (Red Hat)
- Weakness
- CWE-78
- Fixed releases
- Red Hat: 2.14.2
- Listed by VulniPulse
- Record changed
Ratings, versions and fixes are quoted from the vendor advisories that cover only CVE-2026-112942; each belongs to its advisory, not to every product listed. How records are collected and checked.
How do I fix CVE-2026-112942?
Upgrade to a fixed release named by the vendor:
- Red Hat: 2.14.2
- --- CME Mitigation Guidance (2026-10-20) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to eliminate shell invocation when launching editor processes on Windows hosts to prevent percent-variable expansion: upgrade to launch-editor 2.14.2 (or the fixed Grafana/Prometheus builds), which resolve file paths with path.resolve() immediately after stripping line and column position suffixes and check UNC paths on the resolved file name, closing all 3 injection vectors (crafted file path with position suffixes, parent-directory traversal bypass, Windows percent-variable expansion). Until patched, this is only a concern on Windows hosts running launch-editor or launch-editor-middleware endpoints — non-Windows platforms are unaffected — so restrict network access to endpoints exposing launch-editor-middleware and audit file path inputs to block parent-directory sequences and percent characters. As a compensating measure, enforce strict allowlist validation to restrict path characters and reject unexpected percent signs and coordinate suffix formats, deploy a web application firewall to detect and block incoming HTTP requests with traversal patterns or command injection characters, deploy Windows Defender Application Control in enforced mode to block unauthorized binaries an injected subcommand might drop, and configure endpoint detection and response agents to monitor and alert on anomalous child process creation spawned from Node.js. These controls limit blast radius and contain exploitation, but they do not fix the underlying improper path validation defect — apply the upstream patch to fully remediate. Highest-impact CME: CME-1301 Path Traversal Prevention (Canonicalization) (high) (Red Hat)
Vendor advisories for CVE-2026-112942
Red Hat
1 advisory- Advisory severityHigh8.8
High [CVE-2026-112942] Command injection via improper file path validation
CVE-2026-112942Source published Source updated
Command injection via improper file path validation. Red Hat rates this important (CVSS 8.8). Weakness: CWE-78.
- Related products — impact not confirmed
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- < 2.14.2
- Source-reported fixed versions
- 2.14.2
- Mitigation guidance
- --- CME Mitigation Guidance (2026-10-20) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to eliminate shell invocation when launching editor processes on Windows hosts to prevent percent-variable expansion: upgrade to launch-editor 2.14.2 (or the fixed Grafana/Prometheus builds), which resolve file paths with path.resolve() immediately after stripping line and column position suffixes and check UNC paths on the resolved file name, closing all 3 injection vectors (crafted file path with position suffixes, parent-directory traversal bypass, Windows percent-variable expansion). Until patched, this is only a concern on Windows hosts running launch-editor or launch-editor-middleware endpoints — non-Windows platforms are unaffected — so restrict network access to endpoints exposing launch-editor-middleware and audit file path inputs to block parent-directory sequences and percent characters. As a compensating measure, enforce strict allowlist validation to restrict path characters and reject unexpected percent signs and coordinate suffix formats, deploy a web application firewall to detect and block incoming HTTP requests with traversal patterns or command injection characters, deploy Windows Defender Application Control in enforced mode to block unauthorized binaries an injected subcommand might drop, and configure endpoint detection and response agents to monitor and alert on anomalous child process creation spawned from Node.js. These controls limit blast radius and contain exploitation, but they do not fix the underlying improper path validation defect — apply the upstream patch to fully remediate. Highest-impact CME: CME-1301 Path Traversal Prevention (Canonicalization) (high)
Veeam
1 advisory- Advisory severityCritical
Critical [CVE-2020-14040 +110] List of Security Fixes and Improvements in Veeam Kasten for Kubernetes
KB4825Source published
This bulletin covers 111 CVEs. The products, versions, score and guidance below describe the bulletin; check its source for applicability to this specific CVE.
List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: Purpose This article aims to provide our customers' security and compliance teams with detailed information on security improvements. - Veeam Kasten for Kubernetes — Release Notes - Also resolves 13 Medium and 7 Low severity CVEs in the same and other packages. - Upgraded the frontend's bundled JavaScript dependencies to resolve GHSA-g2v6-rqmx-r4w6 in @vue/server-renderer (High). - Upgraded to latest UBI base image to resolve multiple CVEs in base OS packages. - Updated the Go runtime to resolve additional upstream Go CVEs. - Updated the bundled Prometheus Helm chart to resolve security issues. - Upgraded the…
- Related products — impact not confirmed
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- 8.5.10
- 8.5.5
- 1.26.1
- 8.5.3
20 more entries in the full advisory.
- Mitigation guidance
- List of Security Fixes and Improvements in Veeam Kasten for Kubernetes KB ID: 4825 Product: Veeam Kasten for Kubernetes | 7 | 7.5 | 8 | 8.5 | 9 Kasten K10 by Veeam | 3 | 5 | 5.5 | 6 | 6.5 Published: 2026-03-02 Last Modified: 2026-11-05 Purpose This article describes all security-related fixes and improvements introduced in each release or update of Veeam Kasten for Kubernetes.
- It is recommended to upgrade Veeam Kasten and to refresh the token by manually logging out.
- Mitigation: Configure a bucket-level Default Object Lock retention so the object store stamps new objects at write time, or upgrade to Kasten 8.5.10.
- Veeam Kasten for Kubernetes 8.5.5 Upgrade to Go 1.26.1 to address CVE-2026-25679 and CVE-2026-27142 Updated the UBI base image to address CVE-2026-4111 Veeam Kasten for Kubernetes 8.5.3 Upgrade to Go 1.25.7 to address CVE-2025-61732.
4 more entries in the full advisory.
- Workarounds
- Veeam Kasten for Kubernetes 8.0.14 Improved logging security for specific block mode datamover upload Pod invocations.
References
More Red Hat advisories
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