{"id":"EUVD-2026-25269","enisaUuid":"44d5ba5d-b99f-3d85-b9d5-02160a776e29","description":"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.","datePublished":"Apr 23, 2026, 6:03:28 PM","dateUpdated":"Apr 23, 2026, 7:22:47 PM","baseScore":5.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","references":"https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/1048\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3244\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3309\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/533\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/7061\n","aliases":"CVE-2026-40894\n","assigner":"GitHub_M","epss":0.46,"enisaIdProduct":[{"id":"2628f7a6-f9e9-361f-b2f6-6dbe77f8ae1f","product":{"name":"OpenTelemetry.Api","vendor":{"name":"open-telemetry"}},"product_version":"0.5.0-beta.2, \u003c 1.15.3"},{"id":"b9cc9014-bea1-3318-9cd4-a029770ab75a","product":{"name":"OpenTelemetry.Extensions.Propagators","vendor":{"name":"open-telemetry"}},"product_version":"1.3.1, \u003c 1.15.3"},{"id":"c216c71e-b6f3-3608-b1b9-d6af0fd34f59","product":{"name":"opentelemetry-dotnet","vendor":{"name":"open-telemetry"}},"product_version":"0.5.0-beta.2, \u003c 1.15.3"}],"enisaIdVendor":[{"id":"9b4d0ce0-8f19-3e8f-aaf7-0b79d36de0c8","vendor":{"name":"open-telemetry"}}],"enisaIdVulnerability":[{"id":"1ed97585-3807-3f42-9f75-7fad5f27acf8","vulnerability":{"id":"GHSA-g94r-2vxg-569j","description":"OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers","datePublished":"Apr 23, 2026, 9:43:53 PM","dateUpdated":"Apr 23, 2026, 9:43:54 PM","baseScore":0.0,"references":"https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-40894\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/1048\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3244\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3309\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3533\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/533\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/7061\nhttps://github.com/open-telemetry/opentelemetry-dotnet\nhttps://github.com/open-telemetry/opentelemetry-dotnet/releases/tag/core-1.15.3\n","enisa_id":"EUVD-2026-25269\n","aliases":"GHSA-g94r-2vxg-569j\nCVE-2026-40894\n","epss":0.0,"dataProcessed":"Oct 25, 2026, 1:55:10 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"6f500d80-643b-3c11-a41b-abc1fd618eed","vulnerability":{"id":"CVE-2026-40894","description":"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.","datePublished":"Apr 23, 2026, 6:03:28 PM","dateUpdated":"Apr 23, 2026, 7:22:47 PM","status":"PUBLISHED","baseScore":5.3,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","references":"https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-g94r-2vxg-569j\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/1048\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3244\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/3309\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/533\nhttps://github.com/open-telemetry/opentelemetry-dotnet/pull/7061\n","enisa_id":"EUVD-2026-25269\n","assigner":"GitHub_M","epss":0.46,"dataProcessed":"Oct 30, 2026, 7:16:35 AM","vulnerabilityProduct":[{"id":"2cae5122-64d8-3c2d-9a50-08f487920c29","product":{"name":"OpenTelemetry.Api","vendor":{"name":"open-telemetry"}},"product_version":"0.5.0-beta.2, \u003c 1.15.3"},{"id":"9274f2ef-656c-36d0-899d-59379da891b2","product":{"name":"opentelemetry-dotnet","vendor":{"name":"open-telemetry"}},"product_version":"0.5.0-beta.2, \u003c 1.15.3"},{"id":"a526a935-b00d-37c6-9580-ca9cc2d4adea","product":{"name":"OpenTelemetry.Extensions.Propagators","vendor":{"name":"open-telemetry"}},"product_version":"1.3.1, \u003c 1.15.3"}],"vulnerabilityVendor":[{"id":"24147f37-892e-37d5-9b46-c4541755b800","vendor":{"name":"open-telemetry"}}]}}],"enisaIdAdvisory":[]}