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OpenAdvisories
High · 7.1 CVE-2026-54545 EUVD-2026-49869GHSA-7wpj-vvmv-pgm8

@wakaru/cli arbitrary file write during bundle unpack

Published Jul 28, 2026 · Updated Jul 28, 2026 · Assigned by GitHub_M

Description

wakaru is a JavaScript decompiler and unminifier toolkit. From 1.0.0 until 1.4.0, @wakaru/cli sanitizes bundle-controlled module filenames only once before writing extracted modules, so a crafted filename containing overlapping traversal sequences such as ....// collapses to ../ after sanitization and lets the final output path escape the selected output directory, allowing an attacker who can cause a user to run wakaru --unpack on a malicious bundle to write files outside that directory and, depending on the target path and environment, potentially achieve code execution. This issue is fixed in @wakaru/cli 1.4.0.

Affected products

VendorProductAffectedFixed
pionxzh wakaru >= 1.0.0, < 1.4.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @wakaru/cli >= 1.0.0, < 1.4.0 1.4.0 GHSA-7wpj-vvmv-pgm8

References