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OpenAdvisories
High · 8.7 CVE-2026-55629 EUVD-2026-45030GHSA-3vfr-4gwf-qxfp

Whistle: Path traversal

Published Jul 16, 2026 · Updated Jul 17, 2026 · Assigned by GitHub_M

Description

Whistle is an HTTP, HTTP2, HTTPS, and WebSocket debugging proxy. Prior to 2.10.3, lib/service/service.js handles GET /cgi-bin/temp/get by reading req.query.filename, joining it to TEMP_FILES_PATH only when it matches the temporary file pattern, and otherwise passing the user-supplied filename directly to getFile, allowing a remote attacker to read arbitrary files such as /etc/passwd. This issue is reported as fixed in version 2.10.3.

Affected products

VendorProductAffectedFixed
avwo whistle < 2.10.3 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm whistle < 2.10.3 2.10.3 GHSA-3vfr-4gwf-qxfp

References