CVE catalog
CVE-2026-40894
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, B
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.46% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | opentelemetry | Not reported | 1.15.3 | fixed |
| Cpe | opentelemetry.api | Not reported | 1.15.3 | fixed |
| Cpe | opentelemetry.extensions.propagators | Not reported | 1.15.3 | fixed |
| Cpe | opentelemetry | Not reported | 1.15.3 | fixed |
| Cpe | opentelemetry.api | Not reported | 1.15.3 | fixed |
| Cpe | opentelemetry.extensions.propagators | Not reported | 1.15.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | opentelemetry | cpe | Not reported | 1.15.3 | Not reported | Not reported | Not reported |
| Cpe | opentelemetry.api | cpe | Not reported | 1.15.3 | Not reported | Not reported | Not reported |
| Cpe | opentelemetry.extensions.propagators | cpe | Not reported | 1.15.3 | Not reported | Not reported | Not reported |
| Cpe | opentelemetry | cpe | Not reported | 1.15.3 | Not reported | NVD-CVE-2026-40894 | Not reported |
| Cpe | opentelemetry.api | cpe | Not reported | 1.15.3 | Not reported | NVD-CVE-2026-40894 | Not reported |
| Cpe | opentelemetry.extensions.propagators | cpe | Not reported | 1.15.3 | Not reported | NVD-CVE-2026-40894 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [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]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-40894]