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CVE-2026-47429 is a Windows-specific path traversal vulnerability in Vitest affecting the UI/API and Browser Mode when the server is listening. The flaw allows unauthenticated remote clients to supply crafted path manipulation input that bypasses intended directory restrictions and accesses files outside the designated project scope. On affected Windows deployments, this results in arbitrary file read from the host file system. Available reporting also indicates that, in exposed configurations where the API supports file write and rerun functionality, the same exposure can contribute to arbitrary script execution by enabling modification of project files followed by test reruns.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.