What is GHSA-G433-PQ76-6CMF?

GHSA-G433-PQ76-6CMF is a high-severity improper input validation vulnerability in hpke-rs (rust), affecting versions < 0.6.0. It is fixed in 0.6.0. The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths.

Which packages are affected by GHSA-G433-PQ76-6CMF?

hpke-rs (rust) versions < 0.6.0; hpke-rs-rust-crypto (rust) versions < 0.6.0.

Is there a fix for GHSA-G433-PQ76-6CMF?

Yes. GHSA-G433-PQ76-6CMF is fixed in 0.6.0. Upgrade to this version or later.

Is GHSA-G433-PQ76-6CMF exploitable, and should I be worried?

Whether GHSA-G433-PQ76-6CMF 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-G433-PQ76-6CMF 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-G433-PQ76-6CMF?

Upgrade: hpke-rs to 0.6.0 or later, hpke-rs-rust-crypto to 0.6.0 or later.

GHSA-G433-PQ76-6CMF in hpke-rs

Q: Which packages are affected by GHSA-G433-PQ76-6CMF?

hpke-rs (rust) versions < 0.6.0; hpke-rs-rust-crypto (rust) versions < 0.6.0.

Q: Is there a fix for GHSA-G433-PQ76-6CMF?

Yes. GHSA-G433-PQ76-6CMF is fixed in 0.6.0. Upgrade to this version or later.

Q: Is GHSA-G433-PQ76-6CMF exploitable, and should I be worried?

Whether GHSA-G433-PQ76-6CMF 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-G433-PQ76-6CMF 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-G433-PQ76-6CMF?

Upgrade: hpke-rs to 0.6.0 or later, hpke-rs-rust-crypto to 0.6.0 or later.

Summary

Bug fixes in hpke-rs, hpke-rs-rust-crypto

We publish a GitHub security advisory for any releases whose CHANGELOG includes bug-fixes, and encourage our users to upgrade. The latest releases of the hpke-rs and hpke-rs-rust-crypto crates contain the following bug-fixes:

hpke-rs

#127: Fix KemAlgorithm::TryFrom<u16> mapping where 0x004D incorrectly resolved to XWingDraft06 instead of XWingDraft06Obsolete.
#123: Fix potential overflow in context counter and switch to use u64.
#128: Return errors when trying to use open/seal with export only ciphersuite and when using kdf export with an output that's too long (instead of truncating it)

The issue fixed in #123 was first reported by Nadim Kobeissi.
The issues fixed in #127 and #128 were first reported by Scott Arciszewski.

hpke-rs-rust-crypto

#124: Error out on x25519 0 keys

The issue fixed in #124 was first reported by Nadim Kobeissi.

Impact

The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths. Typical impact: varies by context: data corruption, logic bypass, or denial of service.

Affected versions

hpke-rs (< 0.6.0) hpke-rs-rust-crypto (< 0.6.0)

Security releases

hpke-rs → 0.6.0 (rust) hpke-rs-rust-crypto → 0.6.0 (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 the following packages to resolve this vulnerability:

hpke-rs to 0.6.0 or later; hpke-rs-rust-crypto to 0.6.0 or later

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

Frequently Asked Questions

What is GHSA-G433-PQ76-6CMF? GHSA-G433-PQ76-6CMF is a high-severity improper input validation vulnerability in hpke-rs (rust), affecting versions < 0.6.0. It is fixed in 0.6.0. The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths.
Which packages are affected by GHSA-G433-PQ76-6CMF?
- hpke-rs (rust) (versions < 0.6.0)
- hpke-rs-rust-crypto (rust) (versions < 0.6.0)
Is there a fix for GHSA-G433-PQ76-6CMF? Yes. GHSA-G433-PQ76-6CMF is fixed in 0.6.0. Upgrade to this version or later.
Is GHSA-G433-PQ76-6CMF exploitable, and should I be worried? Whether GHSA-G433-PQ76-6CMF 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-G433-PQ76-6CMF 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-G433-PQ76-6CMF?
- Upgrade hpke-rs to 0.6.0 or later
- Upgrade hpke-rs-rust-crypto to 0.6.0 or later