{"id":"GHSA-38h3-2333-qx47","revision":null,"records":[{"revision":"745f390a14c84c60ae6bfc55f8b3d909","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-41078","aliases":[],"title":"OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path","description":"OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service. There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023.","state":0,"publishedAt":"2026-04-23T18:05:41.367+00:00","modifiedAt":"2026-04-23T18:52:26.466+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\": \"<= 1.6.0-rc.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"OpenTelemetry.Exporter.Jaeger","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open-telemetry\",\n                    \"product\": \"OpenTelemetry.Exporter.Jaeger\",\n                    \"versions\": [\n                        {\n                            \"version\": \"<= 1.6.0-rc.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","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/security/advisories/GHSA-38h3-2333-qx47"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-41078","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-41078","identifiers":["CVE-2026-41078"]},"retained":false,"historicalAffected":[]},{"revision":"055bbfff9b5b429ead120047aa597863","observedAt":"2026-10-28T05:06:40.023+00:00","statement":{"source":"euvd","id":"EUVD-2026-25270","aliases":["CVE-2026-41078","GHSA-38h3-2333-qx47"],"title":"OpenTelemetry dotnet is a dotnet telemetry framework. 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There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":null}],"references":["https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25270","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 23, 2026, 6:05:41 PM","dateUpdated":"Apr 23, 2026, 6:52:26 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-25270","identifiers":["EUVD-2026-25270","CVE-2026-41078","GHSA-38h3-2333-qx47"]},"retained":false,"historicalAffected":[]},{"revision":"41af7a70303748a2b292f36036d78208","observedAt":"2026-10-27T10:10:07.342+00:00","statement":{"source":"nvd","id":"CVE-2026-41078","aliases":[],"title":"OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that en…","description":"OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service. There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023.","state":0,"publishedAt":"2026-04-23T19:17:28.95+00:00","modifiedAt":"2026-10-26T21:10:00.17+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","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/security/advisories/GHSA-38h3-2333-qx47"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41078","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-770"],"productCriteria":["cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*","cpe:2.3:a:opentelemetry:opentelemetry:1.6.0:alpha1:*:*:*:.net:*:*","cpe:2.3:a:opentelemetry:opentelemetry:1.6.0:beta1:*:*:*:.net:*:*","cpe:2.3:a:opentelemetry:opentelemetry:1.6.0:beta2:*:*:*:.net:*:*","cpe:2.3:a:opentelemetry:opentelemetry:1.6.0:beta3:*:*:*:.net:*:*","cpe:2.3:a:opentelemetry:opentelemetry:1.6.0:rc1:*:*:*:.net:*:*"],"sourceDates":{"published":"2026-04-23T19:17:28.950","lastModified":"2026-10-26T21:10:00.170"},"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-2026-41078","identifiers":["CVE-2026-41078"]},"retained":false,"historicalAffected":[]},{"revision":"ec8fa73bf7e142d59cf62fc7a70ca49e","observedAt":"2026-10-23T16:01:25.029+00:00","statement":{"source":"osv","id":"GHSA-38h3-2333-qx47","aliases":["CVE-2026-41078"],"title":"OpenTelemetry .NET has potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path","description":"### Summary\n\n> [!IMPORTANT]  \n> There is no plan to fix this issue as `OpenTelemetry.Exporter.Jaeger` was deprecated in 2023. It is for informational purposes only.\n\n`OpenTelemetry.Exporter.Jaeger` may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service.\n\n### Details\n\nThe Jaeger exporter conversion path can append tag/event data into pooled list structures. In affected versions, pooled allocation sizing may be influenced by large observed payloads and reused globally across later allocations, resulting in persistent oversized rentals and elevated memory pressure. In environments where telemetry attributes/events can be influenced by untrusted input and limits are increased from defaults, this may lead to process instability or denial of service.\n\n### Impact\n\nAvailability impact only. Confidentiality and integrity impacts are not expected.\n\n### Workarounds / Mitigations\n\n* Prefer maintained exporters (for example OpenTelemetry Protocol format (OTLP)) instead of the Jaeger exporter.","state":0,"publishedAt":"2026-04-18T01:05:12+00:00","modifiedAt":"2026-05-05T16:00:07.372629+00:00","affected":[{"ecosystem":"NuGet","name":"OpenTelemetry.Exporter.Jaeger","ranges":[{"type":"ECOSYSTEM","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"1.6.0-rc.1"}]}],"versions":["1.0.0-rc2","1.0.0-rc3","1.0.0-rc4","1.0.1","1.1.0","1.1.0-beta1","1.1.0-beta2","1.1.0-beta3","1.1.0-beta4","1.1.0-rc1","1.2.0","1.2.0-alpha1","1.2.0-alpha2","1.2.0-alpha3","1.2.0-alpha4","1.2.0-beta1","1.2.0-rc1","1.2.0-rc2","1.2.0-rc3","1.2.0-rc4","1.2.0-rc5","1.3.0","1.3.1","1.3.2","1.4.0","1.5.0","1.5.1"],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47","https://nvd.nist.gov/vuln/detail/CVE-2026-41078","https://github.com/open-telemetry/opentelemetry-dotnet"],"sourceUrl":"https://github.com/advisories/GHSA-38h3-2333-qx47","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-38h3-2333-qx47","identifiers":["GHSA-38h3-2333-qx47","CVE-2026-41078"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-10-30T03:49:20.9459112+00:00","complete":true,"records":1764,"lastAttemptAt":"2026-10-30T03:49:20.9459112+00:00","lastSuccessAt":"2026-10-30T03:49:21.0956195+00:00","error":null,"lastVerifiedAt":"2026-10-30T03:49:21.0956209+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-7e2c4e7288f2c464ad8c61f3bb6017374714faedcc781283ac06a706ee1a820b-31f63acb545dc1dc83bfd29d704f05b1f9bcf49861d98da742d3d09d4feba239","complete":true,"records":416818,"lastAttemptAt":"2026-10-30T03:48:58.3782708+00:00","lastSuccessAt":"2026-10-30T03:48:58.3604559+00:00","error":null,"lastVerifiedAt":"2026-10-30T03:48:58.3782708+00:00","snapshotPublishedAt":"2026-10-30T03:26:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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