{"id":"CVE-2026-40182","revision":"d7dd227d26e04513bd3aa90ea28b59b0","records":[{"revision":"d7dd227d26e04513bd3aa90ea28b59b0","observedAt":"2026-10-25T09:17:24.328+00:00","statement":{"source":"nvd","id":"CVE-2026-40182","aliases":[],"title":"OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTTP using OpenTelemetry Protocol format (OTLP), if the request results in a unsuccessful requ…","description":"OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTTP using OpenTelemetry Protocol format (OTLP), if the request results in a unsuccessful request (i.e. HTTP 4xx or 5xx), the response is read into memory with no upper-bound on the number of bytes consumed. This could cause memory exhaustion in the consuming application if the configured back-end/collector endpoint is attacker-controlled (or a network attacker can MitM the connection) and an extremely large body is returned by the response. This vulnerability is fixed in 1.15.2.","state":0,"publishedAt":"2026-04-23T18:16:28.13+00:00","modifiedAt":"2026-06-17T10:44:49.967+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/open-telemetry/opentelemetry-dotnet/pull/6564","https://github.com/open-telemetry/opentelemetry-dotnet/pull/7017","https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-q834-8qmm-v933","https://github.com/open-telemetry/opentelemetry-proto/pull/781"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-40182","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-789"],"productCriteria":["cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*"],"sourceDates":{"published":"2026-04-23T18:16:28.130","lastModified":"2026-06-17T10:44:49.967"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-40182","identifiers":["CVE-2026-40182"]},"retained":false,"historicalAffected":[]}],"coverage":[]}