{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44967","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-08T16:23:33.263Z","datePublished":"2026-06-12T14:52:00.124Z","dateUpdated":"2026-06-12T16:10:48.362Z"},"containers":{"cna":{"title":"opentelemetry-cpp: OTLP HTTP exporters read unbounded HTTP response","problemTypes":[{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvj"},{"name":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58"},{"name":"https://github.com/open-telemetry/opentelemetry-cpp/issues/3958","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-cpp/issues/3958"},{"name":"https://github.com/open-telemetry/opentelemetry-cpp/pull/4078","tags":["x_refsource_MISC"],"url":"https://github.com/open-telemetry/opentelemetry-cpp/pull/4078"}],"affected":[{"vendor":"open-telemetry","product":"opentelemetry-cpp","versions":[{"version":"< 1.27.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-06-12T14:52:00.124Z"},"descriptions":[{"lang":"en","value":"OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0."}],"source":{"advisory":"GHSA-5qhm-4rfp-qqvj","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-12T16:10:44.803865Z","id":"CVE-2026-44967","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-12T16:10:48.362Z"}}]}}