CVE-2025-29787: zip Package Arbitrary File Write Vulnerability
Summary
CVE-2025-29787: zip Incorrectly Canonicalizes Paths during Archive Extraction Leading to Arbitrary File Write. Affects zip versions >= 1.3.0, < 2.3.0. Fixed in 2.3.0. How to fix ↓
Also tracked for
- rust-zip · Debian:11
The same CVE-2025-29787 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
The 'zip' crate is a widely used library in Rust for handling ZIP archive files. It provides functionalities for creating, reading, and extracting ZIP files. The library is designed to be efficient and secure, but it has a vulnerability that allows for improper handling of symbolic links during the extraction process, which can lead to serious security risks.
Vulnerability Detail
In the archive extraction routine of affected versions of the 'zip' crate, symbolic links earlier in the archive can be exploited to overwrite arbitrary files in the file system. This vulnerability arises from the failure to validate the final canonicalized path of these symbolic links, allowing maliciously crafted archives to escape the intended extraction directory. This is a variant of the zip-slip vulnerability, which can lead to unauthorized file modifications and potential code execution.
How To Fix
Latest published version: 9.0.5 as of 22 Oct 2026
Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.3.0
This is the first release that contains the fix.
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Workaround
As a temporary measure, avoid extracting untrusted ZIP archives using the affected methods. Instead, consider using alternative libraries or tools that do not allow symbolic link traversal during extraction.
Conclusion
The CVE-2025-29787 vulnerability in the 'zip' crate poses significant risks due to improper handling of symbolic links during extraction. Users are encouraged to update to the patched version to mitigate these risks and ensure the security of their applications.
See every vulnerability recorded for zip →
FAQ
CVE-2025-29787 is a vulnerability in the 'zip' crate that allows for arbitrary file writes due to improper handling of symbolic links during archive extraction.
Versions of the 'zip' crate from 1.3.0 to 2.2.9 are affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected without needing to sign up.
Exploiting this vulnerability can lead to unauthorized file modifications, potentially allowing attackers to execute arbitrary code on the system.
Yes, the vulnerability has been patched in version 2.3.0 of the 'zip' crate. Users are advised to update to this version or later.
References
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