CVE-2026-78638 peerigon unzip-crx/unzip-crx-3 Archive Extraction index.js unzip path traversal
A path traversal vulnerability in peerigon unzip-crx allows local attackers to read or modify files outside the intended directory via manipulated destination arguments.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-78638?
CVE-2026-78638 is a medium-severity path traversal vulnerability in peerigon unzip-crx, published on 25 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A flaw has been found in peerigon unzip-crx and unzip-crx-3 up to 0.2.0. This affects the function unzip of the file dist/index.js of the component Archive Extraction. Executing a manipulation of the argument destination can lead to path traversal. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Weakness: CWE-22
Which versions are affected by CVE-2026-78638?
How do I fix CVE-2026-78638?
No fix has been published for CVE-2026-78638 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-78638 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-78638 exists.
Sources
Also known as GHSA-5jh7-c63f-jp85.