CVE-2025-59825 astral-tokio-tar has a path traversal in tar extraction
Attackers can exploit path traversal in astral-tokio-tar to write arbitrary files outside the destination directory, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-59825?
CVE-2025-59825 is a medium-severity path traversal vulnerability in astral-sh tokio-tar, published on 23 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
astral-tokio-tar is a tar archive reading/writing library for async Rust. In versions 0.5.3 and earlier of astral-tokio-tar, tar archives may extract outside of their intended destination directory when using the Entry::unpack_in_raw API. Additionally, the Entry::allow_external_symlinks control (which defaults to true) could be bypassed via a pair of symlinks that individually point within the destination but combine to point outside of it. These behaviors could be used individually or combined to bypass the intended security control of limiting extraction to the given directory. This in turn would allow an attacker with a malicious tar archive to perform an arbitrary file write and potentially pivot into code execution. This issue has been patched in version 0.5.4. There is no workaround other than upgrading.
Which versions are affected by CVE-2025-59825?
2 open source packages ship an affected version, including astral-tokio-tar.
| Package | Affected | Fixed in |
|---|---|---|
astral-tokio-tar crates.io | All versions | 0.5.4 |
astral-tokio-tar crates.io | All versions | 0.5.4 |
How do I fix CVE-2025-59825?
Upgrade astral-tokio-tar to 0.5.4 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-59825 being exploited?
There is no known exploitation of CVE-2025-59825 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2025-59825, GHSA-3wgq-wrwc-vqmv, UBUNTU-CVE-2025-59825.