SEPTEMBER 20, 2026
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Case File

CVE-2026-54545

HIGH · CVSS 7.1 EPSS 0.15% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

The vulnerability affects the @wakaru/cli component of the wakaru JavaScript decompiler toolkit, allowing crafted filenames with overlapping traversal sequences to escape the designated output directory during module extraction. This could enable an attacker to write files outside the intended directory, potentially leading to code execution if the user runs the tool on a malicious bundle. Organizations using versions 1.0.0 to 1.4.0 of wakaru should prioritize upgrading to version 1.4.0 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-54545
Severity
HIGH
CVSS
7.1
EPSS
0.15%
Java

Original NVD 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.