What is GHSA-M325-RXJV-PWPH?

GHSA-M325-RXJV-PWPH is a high-severity security vulnerability in messagepack-rs (rust), affecting versions <= 0.8.1. No fixed version is listed yet.

Which versions of messagepack-rs are affected by GHSA-M325-RXJV-PWPH?

messagepack-rs (rust) versions <= 0.8.1 is affected.

Is there a fix for GHSA-M325-RXJV-PWPH?

No fixed version is listed for GHSA-M325-RXJV-PWPH yet. Monitor the advisory for updates and apply mitigations in the interim.

Is GHSA-M325-RXJV-PWPH exploitable, and should I be worried?

Whether GHSA-M325-RXJV-PWPH is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether GHSA-M325-RXJV-PWPH is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

GHSA-M325-RXJV-PWPH in messagepack-rs

Q: Which versions of messagepack-rs are affected by GHSA-M325-RXJV-PWPH?

messagepack-rs (rust) versions <= 0.8.1 is affected.

Q: Is there a fix for GHSA-M325-RXJV-PWPH?

No fixed version is listed for GHSA-M325-RXJV-PWPH yet. Monitor the advisory for updates and apply mitigations in the interim.

Q: Is GHSA-M325-RXJV-PWPH exploitable, and should I be worried?

Whether GHSA-M325-RXJV-PWPH is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether GHSA-M325-RXJV-PWPH is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Summary

Deserialization functions pass uninitialized memory to user-provided Read

Affected versions of this crate passed an uninitialized buffer to a
user-provided Read instance in:

deserialize_binary
deserialize_string
deserialize_extension_others
deserialize_string_primitive

This can result in safe Read implementations reading from the uninitialized
buffer leading to undefined behavior.

Impact

Affected versions

messagepack-rs (<= 0.8.1)

Security releases

Not available

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

Already deployed Kodem?

See it in your environment New to Kodem? Get a demo →

Remediation advice

No fixed version is listed for GHSA-M325-RXJV-PWPH yet.

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is GHSA-M325-RXJV-PWPH? GHSA-M325-RXJV-PWPH is a high-severity security vulnerability in messagepack-rs (rust), affecting versions <= 0.8.1. No fixed version is listed yet.
Which versions of messagepack-rs are affected by GHSA-M325-RXJV-PWPH? messagepack-rs (rust) versions <= 0.8.1 is affected.
Is there a fix for GHSA-M325-RXJV-PWPH? No fixed version is listed for GHSA-M325-RXJV-PWPH yet. Monitor the advisory for updates and apply mitigations in the interim.
Is GHSA-M325-RXJV-PWPH exploitable, and should I be worried? Whether GHSA-M325-RXJV-PWPH is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether GHSA-M325-RXJV-PWPH is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Other vulnerabilities in messagepack-rs

CVE-IDSeverityPackage summary

CVE-2021-45693Criticalmessagepack-rs: Use of Uninitialized Resource in messagepack-rs.CVE-2021-45691Criticalmessagepack-rs: Use of Uninitialized Resource in messagepack-rs CVE-2021-45692Criticalmessagepack-rs: Use of Uninitialized Resource in messagepack-rs.CVE-2021-45690Criticalmessagepack-rs: Use of Uninitialized Resource in messagepack-rs.