Which versions of rmp-serde are affected by GHSA-255R-3PRX-MF99?

rmp-serde (rust) versions < 1.1.1 is affected.

Is there a fix for GHSA-255R-3PRX-MF99?

Yes. GHSA-255R-3PRX-MF99 is fixed in 1.1.1. Upgrade to this version or later.

Is GHSA-255R-3PRX-MF99 exploitable, and should I be worried?

Whether GHSA-255R-3PRX-MF99 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-255R-3PRX-MF99 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-255R-3PRX-MF99 in rmp-serde

Q: What is GHSA-255R-3PRX-MF99?

GHSA-255R-3PRX-MF99 is a medium-severity security vulnerability in rmp-serde (rust), affecting versions < 1.1.1. It is fixed in 1.1.1.

Q: Is there a fix for GHSA-255R-3PRX-MF99?

Yes. GHSA-255R-3PRX-MF99 is fixed in 1.1.1. Upgrade to this version or later.

Q: Is GHSA-255R-3PRX-MF99 exploitable, and should I be worried?

Whether GHSA-255R-3PRX-MF99 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-255R-3PRX-MF99 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.

Q: How do I fix GHSA-255R-3PRX-MF99?

Upgrade rmp-serde to 1.1.1 or later.

GHSA-255R-3PRX-MF99

GHSA-255R-3PRX-MF99 is a medium-severity security vulnerability in rmp-serde (rust), affecting versions < 1.1.1. It is fixed in 1.1.1.

Does this CVE actually affect you?

Kodem shows which CVEs are reachable and running in your applications, so you fix what's exploitable, not just what's listed.

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Runtime intelligence, not another scanner.

Summary

rmp-serde Raw and RawRef may crash when receiving invalid UTF-8

It was found that Raw::from_utf8 expects valid UTF-8. If invalid UTF-8 is received it can cause the process to crash.

Impact

Affected versions

rmp-serde (< 1.1.1)

Security releases

rmp-serde → 1.1.1 (rust)

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.

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Remediation advice

Upgrade rmp-serde to 1.1.1 or later to resolve this vulnerability.

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

Frequently Asked Questions

What is GHSA-255R-3PRX-MF99? GHSA-255R-3PRX-MF99 is a medium-severity security vulnerability in rmp-serde (rust), affecting versions < 1.1.1. It is fixed in 1.1.1.
Which versions of rmp-serde are affected by GHSA-255R-3PRX-MF99? rmp-serde (rust) versions < 1.1.1 is affected.
Is there a fix for GHSA-255R-3PRX-MF99? Yes. GHSA-255R-3PRX-MF99 is fixed in 1.1.1. Upgrade to this version or later.
Is GHSA-255R-3PRX-MF99 exploitable, and should I be worried? Whether GHSA-255R-3PRX-MF99 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-255R-3PRX-MF99 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.
How do I fix GHSA-255R-3PRX-MF99? Upgrade rmp-serde to 1.1.1 or later.