{"id":"CVE-2026-40182","revision":"05a2768c17eb44cab7d81ef436244cfc","records":[{"revision":"05a2768c17eb44cab7d81ef436244cfc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-40182","aliases":[],"title":"OpenTelemetry dotnet: OTLP exporter reads unbounded HTTP response bodies","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":"2026-04-23T17:51:34.961+00:00","modifiedAt":"2026-04-23T18:38:57.155+00:00","affected":[{"ecosystem":"Vendor product","name":"opentelemetry-dotnet","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open-telemetry\",\n                    \"product\": \"opentelemetry-dotnet\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.13.1, < 1.15.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","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"}],"references":["https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-q834-8qmm-v933","https://github.com/open-telemetry/opentelemetry-dotnet/pull/6564","https://github.com/open-telemetry/opentelemetry-dotnet/pull/7017","https://github.com/open-telemetry/opentelemetry-proto/pull/781"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-40182","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-40182","identifiers":["CVE-2026-40182"]},"retained":false,"historicalAffected":[]}],"coverage":[]}