GHSA-8327-84cj-8xjm is a medium-severity (CVSS 5.3) remote code execution vulnerability in alloy-json-abi. No vendor fix is recorded yet; mitigation options are listed below.
Stack overflow when parsing specially crafted JSON ABI strings
Real-World Exposure
alloy-json-abiReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
Affected versions of the alloy-json-abi crate did not properly handle parsing of malformatted JSON ABI strings. The JsonAbi::parse method can be tricked into a stack overflow when processing specially crafted input.
This stack overflow can lead to a crash of the application using this crate, potentially causing a denial of service.
The flaw was corrected in commit 4790c47.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | alloy-json-abi | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for alloy-json-abi, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Remediation status
No patched version of alloy-json-abi has shipped for GHSA-8327-84cj-8xjm yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-8327-84cj-8xjm can be triaged on real exposure rather than presence alone.
Tailored to GHSA-8327-84cj-8xjm. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-8327-84cj-8xjm in your dependencies?
O3 Security finds GHSA-8327-84cj-8xjm across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.