Symlink Attack Affecting adm-zip package, versions >=0.5.9
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-ADMZIP-19276676
- published27 Aug 2026
- disclosed24 Aug 2026
- creditMuhammad Sobirov
Introduced: 24 Aug 2026
NewCVE-2026-76845 (opens in a new tab)How to fix?
There is no fixed version for adm-zip.
Overview
adm-zip is a JavaScript implementation for zip data compression for NodeJS.
Affected versions of this package are vulnerable to Symlink Attack through the extractAllTo, extractAllToAsync, and extractEntryTo code paths in util/utils.js. An attacker can write attacker-controlled contents outside the extraction root by placing a symbolic link inside the destination directory and then supplying an archive entry that is extracted with overwrite enabled. This can replace any file the extracting process is allowed to write, breaking the integrity of files in shared, reused, or predictable extraction locations such as temporary directories or CI workspaces.