CVE-2020-36620 is a high-severity (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in EnumStringValues. A fix is available for EnumStringValues — see the affected versions and patch details below.
EnumStringValues vulnerable to Uncontrolled Resource Consumption
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2020-36620.
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.
How urgent is this, really
CVE-2020-36620 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,166 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
EnumStringValuesReal-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
A vulnerability was found in Brondahl EnumStringValues up to 4.0.0. It has been declared as problematic. This vulnerability affects the function GetStringValuesWithPreferences_Uncache of the file EnumStringValues/EnumExtensions.cs. The manipulation leads to resource consumption. Upgrading to version 4.0.1 is able to address this issue. The name of the patch is c0fc7806beb24883cc2f9543ebc50c0820297307. It is recommended to upgrade the affected component. VDB-216466 is the identifier assigned to this vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | EnumStringValues | all versions | 4.0.2dotnet add package EnumStringValues --version 4.0.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for EnumStringValues, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update EnumStringValues to 4.0.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-36620 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 CVE-2020-36620 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2020-36620. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2020-36620 in your dependencies?
O3 Security finds CVE-2020-36620 across NuGet dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.