VYPR
High severityNVD Advisory· Published Jul 28, 2026· Updated Jul 28, 2026

@wakaru/cli arbitrary file write during bundle unpack

CVE-2026-54545

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 packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
@wakaru/clinpm
>= 1.0.0, < 1.4.01.4.0

Affected products

2

Patches

Vulnerability mechanics

References

4

News mentions

0

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