Unmaintained Package Alert: sized-chunks Vulnerability
Summary
RUSTSEC-2026-0251: sized-chunks is unmaintained. Affects sized-chunks versions >= 0.0.0-0. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The sized-chunks crate is a Rust library designed to facilitate the handling of data in fixed-size chunks, making it easier for developers to manage memory and data processing efficiently. However, it has recently been identified as unmaintained, with all versions affected by this status. The repository was archived by the owner on May 3, 2026, indicating that no further updates or support will be provided.
Vulnerability Detail
The vulnerability stems from the fact that the sized-chunks crate is no longer maintained, meaning that any existing bugs, security issues, or compatibility problems will not be addressed. This can lead to potential security risks in applications that rely on this crate, as they may become vulnerable to exploits that could have been mitigated through regular updates and maintenance. Developers using this crate should be aware that they are using software that is not actively supported.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
Currently, there are no specific workarounds for the sized-chunks crate since it is unmaintained. The best course of action is to migrate to an alternative library, such as imbl-sized-chunks, as mentioned above.
Conclusion
The sized-chunks crate is currently unmaintained, posing potential risks to applications that rely on it. Developers are advised to transition to the imbl-sized-chunks crate as a safer alternative. Utilizing tools like Vulert can help monitor for vulnerabilities in your projects.
See every vulnerability recorded for sized-chunks →
FAQ
It means that the package will not receive any updates, bug fixes, or security patches, which can lead to vulnerabilities in applications that depend on it.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Simply upload your Cargo.lock file to the Vulert playground at Vulert Scanner to check for vulnerabilities.
While there are no direct workarounds, you should prioritize migrating to a maintained alternative as soon as possible to mitigate risks.
Yes, using unmaintained packages can expose your application to security vulnerabilities and compatibility issues that will not be resolved.
You can find the imbl-sized-chunks crate on crates.io, where you can view its documentation and latest versions.
References
Related vulnerabilities
Recent vulnerabilities recorded for sized-chunks.
