high8.7
CVE-2025-59343
tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball
Impact
### Impact v3.1.0, v2.1.3, v1.16.5 and below ### Patches Has been patched in 3.1.1, 2.1.4, and 1.16.6 ### Workarounds You can use the ignore option to ignore non files/directories. ```js ignore (_, header) { // pass files & directories, ignore e.g. symlinks return header.type !== 'file' && header.type !== 'directory' } ``` ### Credit Reported by: Mapta / BugBunny_ai
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | tar-fs | >= 3.0.0, < 3.1.1 | 3.1.1 |
Affected products
| Product | Affected versions |
|---|---|
| Tar-Fs Provides Filesystem Bindings For Tar-Stream. | before 3.1.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/mafintosh/tar-fs/commit/0bd54cdf06da2b7b5b95cd4b062c9f4e0a8c4e09
- https://github.com/mafintosh/tar-fs/security/advisories/GHSA-vj76-c3g6-qr5v
- https://lists.debian.org/debian-lts-announce/2025/09/msg00028.html
- https://github.com/advisories/GHSA-vj76-c3g6-qr5v
- https://nvd.nist.gov/vuln/detail/CVE-2025-59343