Tar Archive Vulnerability in Astral-Tokio-Tar Library
CVE-2025-59825

6.1MEDIUM

Key Information:

Vendor

Astral-sh

Status
Tokio-tar
Vendor
CVE Published:
23 September 2025

What is CVE-2025-59825?

The astral-tokio-tar library for async Rust exhibits a vulnerability in versions 0.5.3 and earlier that may allow tar archives to be extracted outside their intended destination directories. This occurs through the Entry::unpack_in_raw API, which fails to enforce the security controls that limit file extraction to specific directories. Additionally, the Entry::allow_external_symlinks setting, which is enabled by default, can be bypassed. This manipulation could allow an attacker to create a malicious tar archive that performs arbitrary file writes, potentially leading to unauthorized code execution within the system. Users are strongly advised to upgrade to version 0.5.4 to mitigate this issue.

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Affected Version(s)

tokio-tar < 0.5.4

References

https://github.com/astral-sh/tokio-tar/security/advisorie...
x_refsource_CONFIRM
https://github.com/astral-sh/uv/issues/12163
x_refsource_MISC
https://github.com/astral-sh/tokio-tar/commit/036fdecc85c...
x_refsource_MISC

CVSS V4

Score:
6.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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