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Github Security Blog
Github Security Blog
•added 2026/10/21 4:47 p.m.•27 views

Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

Summary The first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Impact Only apps that match one of the following conditions are affected: - explicitly expose the Vite dev server to the network using --host or the...

6.3CVSS5.8AI score0.00502EPSS
SaveExploits0References6Affected Software2
Patchstack
Patchstack
•added 2026/10/21 4:47 p.m.•20 views

npm: Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

npm: Vite: First 4 bytes of files outside of server.fs setting is exposed by ?vite-wasm-instance vulnerability discovered by ? in WordPress npm vite versions = 8.2.0, = 8.2.3...

6.3CVSS5.9AI score0.00502EPSS
SaveExploits0References6Affected Software1
osv_ghsa
osv_ghsa
•added 2026/10/21 4:47 p.m.•27 views

GHSA-VFPM-58RQ-9QCG Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

Summary The first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Impact Only apps that match one of the following conditions are affected: - explicitly expose the Vite dev server to the network using --host or the...

6.3CVSS5.8AI score0.00502EPSS
SaveExploits0References6
osv_ubuntu
osv_ubuntu
•added 2026/10/21 4:47 p.m.•17 views

UBUNTU-CVE-2026-112947

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References10
Patchstack
Patchstack
•added 2026/10/21 4:47 p.m.•18 views

npm: Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

npm: Vite: First 4 bytes of files outside of server.fs setting is exposed by ?vite-wasm-instance vulnerability discovered by ? in WordPress npm vite-plus versions = 0.2.8, = 1.0.0...

6.3CVSS5.9AI score0.00502EPSS
SaveExploits0References6Affected Software1
NVD
NVD
•added 2026/10/20 4:17 p.m.•21 views

CVE-2026-112947

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS0.00502EPSS
SaveExploits0References4
Vulnrichment
Vulnrichment
•added 2026/10/20 3:10 p.m.•14 views

CVE-2026-112947 Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References4
CVE
CVE
•added 2026/10/20 3:10 p.m.•53 views

CVE-2026-112947

The Vite frontend tooling framework (versions 8.2.0 through 8.2.4 and 8.3.3 ) is vulnerable to a path traversal and information exposure flaw. An attacker can request files outside the server.fs setting by using the ?vite-wasm-instance query parameter. The internal Wasm plugin's load hook handles...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References4
Cvelist
Cvelist
•added 2026/10/20 3:10 p.m.•28 views

CVE-2026-112947 Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS0.00502EPSS
SaveExploits0References4
Mend
Mend
•added 2026/10/20 3:10 p.m.•66 views

CVE-2026-112947

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References4
osv_cve
osv_cve
•added 2026/10/20 3:10 p.m.•22 views

CVE-2026-112947 Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`

Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References6
CNNVD
CNNVD
•added 2026/10/19 4:00 p.m.•25 views

Vite information leakage vulnerability

Vite versions from 8.3.0 to 8.3.3 and from 8.2.0 to 8.2.4, as well as vite-plus version 0.2.8 to 1.1.0, have security vulnerabilities. The vulnerability stems from the Wasm plugin load hook not applying the server.fs check. When processing requests containing the?vite-wasm-instance query, the...

6.3CVSS6AI score0.00502EPSS
SaveExploits0References4
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