CVE-2026-112942

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{"affected": [{"affectedData": [{"product": "launch-editor", "vendor": "vitejs", "versions": [{"status": "affected", "version": "< 2.14.2"}]}, {"product": "vite", "vendor": "vitejs", "versions": [{"status": "affected", "version": ">= 8.3.0, < 8.3.3"}, {"status": "affected", "version": ">= 8.2.0, < 8.2.4"}, {"status": "affected", "version": ">= 8.0.0, < 8.1.6"}, {"status": "affected", "version": ">= 7.0.0, < 7.3.7"}, {"status": "affected", "version": "< 6.4.4"}]}, {"product": "vite-plus", "vendor": "vitejs", "versions": [{"status": "affected", "version": "< 1.1.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "launch-editor allows users to open files with line numbers in editor from Node.js. Prior to 2.14.2, launch-editor-middleware processes an attacker-controlled Windows file argument where the file argument ends in a parent-directory component plus a line-and-column suffix: the path is resolved while the suffix is still present, and launch-editor removes the suffix before its existsSync check, leaving the existing parent directory for existsSync and allowing the attacker-controlled file argument to pass filename existence validation without requiring the malicious filename to exist. The bypass can lead to OS command injection when combined with the separately described Windows percent-expansion flaw. This issue is fixed in version 2.14.2."}], "id": "CVE-2026-112942", "lastModified": "2026-10-21T16:17:15.207", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-112942", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-21T14:39:45.288402Z", "version": "2.0.3"}}]}, "published": "2026-10-20T15:17:17.230", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/vitejs/launch-editor/commit/f13cd835d4b8e860b1d4d080ad8a490cc2463679"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitejs/launch-editor/releases/tag/v2.14.2"}, {"source": "security-advisories@github.com", "url": "https://github.com/vitejs/launch-editor/security/advisories/GHSA-587h-7wmj-h5pm"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "launch-editor: launch-editor: Command injection via improper file path validation", "id": "2556237", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2556237"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-78", "details": ["A flaw was found in launch-editor. This vulnerability can allow a remote attacker to achieve arbitrary command execution on Windows systems. By submitting a specially crafted file path containing line and column suffixes, an attacker can bypass file existence checks due to improper path validation. Consequently, this flaw can be leveraged to execute unauthorized operating system commands on the host."], "mitigation": {"lang": "en:us", "value": "--- CME Mitigation Guidance (2026-10-20) ---\nDisclaimer: 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.\nThe 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 \u2014 non-Windows platforms are unaffected \u2014 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 \u2014 apply the upstream patch to fully remediate.\nHighest-impact CME: CME-1301 Path Traversal Prevention (Canonicalization) (high)"}, "name": "CVE-2026-112942", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.1", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "grafana13.2", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "prometheus3.13", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-20T14:48:06Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-112942\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-112942\nhttps://github.com/vitejs/launch-editor/commit/f13cd835d4b8e860b1d4d080ad8a490cc2463679\nhttps://github.com/vitejs/launch-editor/releases/tag/v2.14.2\nhttps://github.com/vitejs/launch-editor/security/advisories/GHSA-587h-7wmj-h5pm"], "threat_severity": "Important"}

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