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Vulnerabilities CVE-2026-54545

CVE-2026-54545

High
Open
TLP:CLEAR

@wakaru/cli arbitrary file write during bundle unpack

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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.

Details

CVSS Score
7.1
EPSS Score
0.15%

4.6th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Confidence
90%
Published
Jul 28, 2026
Last Modified
Jul 28, 2026
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