Uncontrolled Memory Allocation Affecting azure-functions-host package, versions <4.1051.200-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-AZUREFUNCTIONSHOST-17341745
- published16 Jun 2026
- disclosed23 Apr 2026
Introduced: 23 Apr 2026
CVE-2026-40894 (opens in a new tab)How to fix?
Upgrade Minimos:latest azure-functions-host to version 4.1051.200-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream azure-functions-host package and not the azure-functions-host package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
OpenTelemetry dotnet is a dotnet telemetry framework. In OpenTelemetry.Api 0.5.0-beta.2 to 1.15.2 and OpenTelemetry.Extensions.Propagators 1.3.1 to 1.15.2, The implementation details of the baggage, B3 and Jaeger processing code in the OpenTelemetry.Api and OpenTelemetry.Extensions.Propagators NuGet packages can allocate excessive memory when parsing which could create a potential denial of service (DoS) in the consuming application. This vulnerability is fixed in 1.15.3.
References
- https://www.cve.org/CVERecord?id=CVE-2026-40894
- https://github.com/advisories/GHSA-g94r-2vxg-569j
- https://osv.dev/vulnerability/MINI-cmrr-7m33-j4jp
- https://osv.dev/vulnerability/CVE-2026-40894
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/533
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j