ghsa-3wgq-wrwc-vqmv
Vulnerability from github
Impact
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 (e.g. by overwriting a file that the user or system then executes or uses to execute code).
The impact of this vulnerability for downstream API users of this crate is high, per above. However, for this crate's main downstream user (uv), the impact of this vulnerability is low due to its overlap with equivalent user capabilities in source distributions. See GHSA-7j9j-68r2-f35q for additional details.
Patches
Versions 0.5.4 and newer of astral-tokio-tar address the vulnerability above. Users should upgrade to 0.5.4 or newer.
Workarounds
Users are advised to upgrade to version 0.5.4 or newer to address this advisory.
There is no workaround other than upgrading.
References
- See GHSA-7j9j-68r2-f35q for how this vulnerability affects uv, astral-tokio-tar's primary downstream user. Observe that unlike this advisory, uv's advisory is considered low severity due to overlap with intentional existing capabilities in source distributions.
- This vulnerability is similar to (but not related in code) to CVE-2025-4138 and CVE-2025-4517, which concern Python's tarfile module.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.5.3"
},
"package": {
"ecosystem": "crates.io",
"name": "astral-tokio-tar"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.5.4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2025-59825"
],
"database_specific": {
"cwe_ids": [
"CWE-22",
"CWE-61"
],
"github_reviewed": true,
"github_reviewed_at": "2025-09-23T17:45:07Z",
"nvd_published_at": "2025-09-23T20:15:33Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nIn 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.\n\nThese 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 (e.g. by overwriting a file that the user or system then executes or uses to execute code). \n\nThe impact of this vulnerability for downstream API users of this crate is **high**, per above. However, for this crate\u0027s main downstream user (uv), the impact of this vulnerability is **low** due to its overlap with equivalent user capabilities in source distributions. See GHSA-7j9j-68r2-f35q for additional details.\n\n### Patches\n\nVersions 0.5.4 and newer of astral-tokio-tar address the vulnerability above. Users should upgrade to 0.5.4 or newer.\n\n### Workarounds\n\nUsers are advised to upgrade to version 0.5.4 or newer to address this advisory.\n\nThere is no workaround other than upgrading.\n\n### References\n\n* See GHSA-7j9j-68r2-f35q for how this vulnerability affects uv, astral-tokio-tar\u0027s primary downstream user. Observe that **unlike** this advisory, uv\u0027s advisory is considered **low severity** due to overlap with intentional existing capabilities in source distributions.\n* This vulnerability is similar to (but not related in code) to CVE-2025-4138 and CVE-2025-4517, which concern Python\u0027s tarfile module.",
"id": "GHSA-3wgq-wrwc-vqmv",
"modified": "2025-11-18T16:40:30Z",
"published": "2025-09-23T17:45:07Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/astral-sh/tokio-tar/security/advisories/GHSA-3wgq-wrwc-vqmv"
},
{
"type": "WEB",
"url": "https://github.com/google/security-research/security/advisories/GHSA-9p78-p5g6-gcj8"
},
{
"type": "WEB",
"url": "https://github.com/astral-sh/uv/issues/12163"
},
{
"type": "WEB",
"url": "https://github.com/astral-sh/tokio-tar/commit/036fdecc85c52458ace92dc9e02e9cef90684e75"
},
{
"type": "PACKAGE",
"url": "https://github.com/astral-sh/tokio-tar"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "astral-tokio-tar has a path traversal in tar extraction"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.