GHSA-2jx2-qcm4-rf9h — grpc-swift
GHSA-2jx2-qcm4-rf9h is a security vulnerability in github.com/grpc/grpc-swift. A fix is available for github.com/grpc/grpc-swift — see the affected versions and patch details below.
Incomplete Internal State Distinction in GRPCWebToHTTP2ServerCodec
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Real-World Exposure
github.com/grpc/grpc-swiftReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects SwiftURL packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Affected gRPC Swift servers are vulnerable to precondition failures when parsing certain gRPC Web requests. This may lead to a denial of service.
Patches
The problem has been fixed in 1.2.0.
Workarounds
No workaround is available. Users must upgrade.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦SwiftURL | github.com/grpc/grpc-swift | all versions | 1.2.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/grpc/grpc-swift, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/grpc/grpc-swift to 1.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2jx2-qcm4-rf9h is resolved across your whole dependency graph.
Workarounds
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-2jx2-qcm4-rf9h can be triaged on real exposure rather than presence alone.
Tailored to GHSA-2jx2-qcm4-rf9h. 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-2jx2-qcm4-rf9h in your dependencies?
O3 Security finds GHSA-2jx2-qcm4-rf9h across SwiftURL dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.