CVEvulnerability
CVE-2026-40894
5.3 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-23
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-789
Description
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.
Affected configurations
• opentelemetry opentelemetry (>= 0.5.0 < 1.15.3)
• opentelemetry opentelemetry.api (>= 0.5.0 < 1.15.3)
• opentelemetry opentelemetry.extensions.propagators (> 1.3.0 < 1.15.3)
Related
Weakness · CWE (1)
- CWE-789 Memory Allocation with Excessive Size Value weakness
References
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048 Issue Tracking, Patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244 Issue Tracking, Patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309 Issue Tracking, Patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/533 Issue Tracking, Patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061 Issue Tracking, Patch
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j Mitigation, Vendor Advisory