Summary
rPGP affected by crash in message handling for deeply nested messages
Previous rPGP versions could be caused to crash with a "stack overflow" when parsing messages that contain deeply nested message layers, such as messages with many signatures.
rPGP 0.19.0 resolves this issue with a more robust message handling implementation (via https://github.com/rpgp/rpgp/pull/625).
Attribution
Discovered internally during rPGP development, using a fuzz test suite previously contributed by Christian Reitter.
Impact
An attacker could cause applications to crash in rPGP's message parsing subsystem, when applications attempt to ingest messages.
Affected versions
Security releases
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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Frequently Asked Questions
- What is GHSA-8H58-W33P-WQ3G? GHSA-8H58-W33P-WQ3G is a high-severity security vulnerability in pgp (rust), affecting versions >= 0.16.0-alpha.0, < 0.19.0. It is fixed in 0.19.0.
- Which versions of pgp are affected by GHSA-8H58-W33P-WQ3G? pgp (rust) versions >= 0.16.0-alpha.0, < 0.19.0 is affected.
- Is there a fix for GHSA-8H58-W33P-WQ3G? Yes. GHSA-8H58-W33P-WQ3G is fixed in 0.19.0. Upgrade to this version or later.
- Is GHSA-8H58-W33P-WQ3G exploitable, and should I be worried? Whether GHSA-8H58-W33P-WQ3G 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-8H58-W33P-WQ3G 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-8H58-W33P-WQ3G? Upgrade
pgpto 0.19.0 or later.