Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/pionxzh/wakaru/commit/1d30383b20a6f768786b8ada2f1b0945de13c31
- https://github.com/pionxzh/wakaru/releases/tag/v1.4.0
- https://github.com/pionxzh/wakaru/security/advisories/GHSA-7wpj-vvmv-pgm8
FAQ
What is CVE-2026-54545?
CVE-2026-54545 is a vulnerability with a CVSS score of 7.1 (HIGH). 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 file...
How severe is CVE-2026-54545?
CVE-2026-54545 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-54545?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.