CVE-2026-107709 Bower decompress-zip has a path traversal vulnerability
Attackers can exploit path traversal in decompress-zip to write files outside the extraction directory, potentially leading to arbitrary file overwrite or remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-107709?
CVE-2026-107709 is a high-severity path traversal vulnerability in Bower Decompress-Zip decompress-zip, published on 8 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
A path traversal vulnerability exists in Bower decompress-zip through version 0.3.3. The vulnerability located in `lib/decompress-zip.js` improperly validates archive entry paths during ZIP extraction. A crafted ZIP archive containing entries that resolve to prefix-sibling directories can cause files to be written outside the intended extraction directory. Successful exploitation may allow arbitrary file overwrite, application compromise, or remote code execution depending on the target environment and writable sibling paths.
Weakness: CWE-22
Which versions are affected by CVE-2026-107709?
How do I fix CVE-2026-107709?
Upgrade to a fixed version.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-107709 being exploited?
There is no known exploitation of CVE-2026-107709 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1792115181, GHSA-28q5-x45v-4c4c.