CVE-2026-40894OpenTelemetry dotnet is a dotnet telemetry framework.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-789
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
opentelemetry opentelemetry opentelemetry:opentelemetry | from 0.5.0 before 1.15.3 | NVD |
opentelemetry opentelemetry.api opentelemetry:opentelemetry.api | from 0.5.0 before 1.15.3 | NVD |
opentelemetry opentelemetry.extensions.propagators opentelemetry:opentelemetry.extensions.propagators | after 1.3.0 before 1.15.3 | NVD |
References
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048issue-tracking, patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244issue-tracking, patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309issue-tracking, patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/533issue-tracking, patch
- https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061issue-tracking, patch
- https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569jmitigation, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.