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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, 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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:739c3196a72831ba089ddfed7fc98dd6b10d513b09701abf4e5cfa3d6767fc47
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"product":"opentelemetry-dotnet","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 0.5.0-beta.2, < 1.15.3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/0

{"product":"OpenTelemetry.Api","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 0.5.0-beta.2, < 1.15.3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/1

{"product":"OpenTelemetry.Extensions.Propagators","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 1.3.1, < 1.15.3"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/2

Affected products and versions

3 source assertions
{"product":"opentelemetry-dotnet","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 0.5.0-beta.2, < 1.15.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/0
{"product":"OpenTelemetry.Api","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 0.5.0-beta.2, < 1.15.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/1
{"product":"OpenTelemetry.Extensions.Propagators","vendor":"open-telemetry","versions":[{"status":"affected","version":">= 1.3.1, < 1.15.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-789","description":"CWE-789: Memory Allocation with Excessive Size Value","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/1048"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/1
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/3244"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/2
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/3309"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/3
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/533","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/533"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/4
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/pull/7061"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/5
{"name":"https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7bdffe0c706043050de03e2507ccd90c5c429bd52c57d07178e5defc64f8f4d3 · sha256:95d65fa20cf0e697… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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