GHSA-qm9f-c3v9-wphv — OPCFoundation.NetStandard…
HIGHGHSA-qm9f-c3v9-wphv is a high-severity (CVSS 7.5) vulnerability in OPCFoundation.NetStandard.Opc.Ua.Core. A fix is available for OPCFoundation.NetStandard.Opc.Ua.Core — see the affected versions and patch details below.
Security Update for the OPC UA .NET Standard Stack
Real-World Exposure
OPCFoundation.NetStandard.Opc.Ua.Core.NETOPCFoundation.NetStandard.Opc.UaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.
Description
This security update resolves a vulnerability in the OPC UA .NET Standard Stack that enables an unauthorized attacker to trigger a rapid increase in memory consumption.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | OPCFoundation.NetStandard.Opc.Ua.Core | all versions | 1.05.374.54dotnet add package OPCFoundation.NetStandard.Opc.Ua.Core --version 1.05.374.54 |
| .NETNuGet | OPCFoundation.NetStandard.Opc.Ua | all versions | 1.05.374.54dotnet add package OPCFoundation.NetStandard.Opc.Ua --version 1.05.374.54 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for OPCFoundation.NetStandard.Opc.Ua.Core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update OPCFoundation.NetStandard.Opc.Ua.Core to 1.05.374.54 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-qm9f-c3v9-wphv 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-qm9f-c3v9-wphv can be triaged on real exposure rather than presence alone.
Tailored to GHSA-qm9f-c3v9-wphv. 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-qm9f-c3v9-wphv in your dependencies?
O3 Security finds GHSA-qm9f-c3v9-wphv across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.