| Package | Affected versions | Patched versions |
|---|---|---|
| @xhmikosr/decompress | ≥ 11.0.0, < 11.1.4< 10.2.2 | 11.1.410.2.2 |
| decompress | ≤ 4.2.1 |
When extracting an untrusted archive with the default decompress(input, output) API, a crafted archive containing a chain of symlink entries can make a later entry resolve outside the output directory. The lexical containment checks pass, but the kernel follows the planted symlinks to a path outside output, letting an attacker write (and read) files outside the intended extraction directory. Overwriting startup scripts or configuration can lead to remote code execution.
This is a bypass of the hardening in GHSA-mp2f-45pm-3cg9. Any application that extracts attacker-controlled archives is affected.
Fixed in 11.1.4 (latest) and backported to 10.2.2 (release-v10 dist-tag). Upgrade to one of these.
The unmaintained upstream decompress package shares this flaw and will not be patched. Migrate to @xhmikosr/[email protected] (or @10.2.2).
None. Do not extract untrusted archives on affected versions. If you cannot upgrade, validate entries out of band and reject any whose resolved path escapes the target directory.
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