CVE-2026-42348

OpenTelemetry.OpAmp.Client is the OpAMP client for OpenTelemetry .NET. Prior to 0.2.0-alpha.1, when receiving responses from the OpAMP server over HTTP, the OpAMP client allocates an unbounded buffer to read all bytes from the server, with no upper-bound on the number of bytes consumed. This coul...

CVE-2026-42348

OpenTelemetry.OpAmp.Client (OpenTelemetry .NET) is affected before version 0.2.0-alpha.1. The HTTP transport reads HttpResponseMessage.Content into memory using ReadAsByteArrayAsync without a size cap, allowing an unbounded read of the entire response body. This can cause memory exhaustion in the...

CVE-2026-42348 OpAMP client reads unbounded HTTP response bodies

OpenTelemetry.OpAmp.Client is the OpAMP client for OpenTelemetry .NET. Prior to 0.2.0-alpha.1, when receiving responses from the OpAMP server over HTTP, the OpAMP client allocates an unbounded buffer to read all bytes from the server, with no upper-bound on the number of bytes consumed. This coul...

CVE-2026-42348 OpAMP client reads unbounded HTTP response bodies

OpenTelemetry.OpAmp.Client is the OpAMP client for OpenTelemetry .NET. Prior to 0.2.0-alpha.1, when receiving responses from the OpAMP server over HTTP, the OpAMP client allocates an unbounded buffer to read all bytes from the server, with no upper-bound on the number of bytes consumed. This coul...

CVE-2026-45686

creationtimestamp| type| source ---|---|--- 2026-05-12 14:14:03+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-43g7-cwr8-q3jh 2026-06-02 18:01:50+00:00| seen|...

CVE-2026-45684

creationtimestamp| type| source ---|---|--- 2026-05-12 14:13:40+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-vvmg-8mjr-g6q3...

CVE-2026-45682

creationtimestamp| type| source ---|---|--- 2026-05-12 14:12:38+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-962q-hwm5-52x5 2026-06-02 16:53:08+00:00| seen|...

CVE-2026-45683

creationtimestamp| type| source ---|---|--- 2026-05-12 14:12:18+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-fjq3-ffvr-vm46 2026-06-02 17:31:17+00:00| seen|...

CVE-2026-45681

creationtimestamp| type| source ---|---|--- 2026-05-12 14:11:59+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-r6c9-g6q5-qrf9...

CVE-2026-45680

creationtimestamp| type| source ---|---|--- 2026-05-12 14:11:52+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-ebpf-instrumentation/security/advisories/GHSA-89c6-vpcj-7vj4...

go.opentelemetry.io/otel: go.opentelemetry.io/otel/schema/v1.0: go.opentelemetry.io/otel/schema/v1.1: OpenTelemetry-Go: Denial of Service due to file descriptor leak

A flaw was found in OpenTelemetry-Go before schema package version 0.0.17. ParseFile in go.opentelemetry.io/otel/schema/v1.0 and v1.1 opens a schema file and passes it to Parse without closing it, leaking one file descriptor per successful call. Repeated parsing in a long-running process can...

go.opentelemetry.io/otel: go.opentelemetry.io/otel/schema/v1.0: go.opentelemetry.io/otel/schema/v1.1: OpenTelemetry-Go: Denial of Service due to file descriptor leak

A flaw was found in OpenTelemetry-Go before schema package version 0.0.17. ParseFile in go.opentelemetry.io/otel/schema/v1.0 and v1.1 opens a schema file and passes it to Parse without closing it, leaking one file descriptor per successful call. Repeated parsing in a long-running process can...

GHSA-PJV4-3C63-699F opentelemetry-collector-contrib's azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay

Summary A server-side authentication bypass in azureauthextension allows any party who holds a single valid Azure access token for any scope the collector's configured identity can mint for to authenticate to any OpenTelemetry receiver that uses auth: azureauth. The extension's Authenticate metho...

CVE-2026-41484

The CVE concerns OpenTelemetry.Exporter.OneCollector for .NET. In versions ≤1.15.0, HttpJsonPostTransport reads the full response body on non-200 HTTP responses, enabling a potential denial-of-service via unbounded memory allocation if the back-end endpoint or an interceptor returns an arbitraril...

CVE-2026-41484 OpenTelemetry.Exporter.OneCollector vulnerable to denial of service via unbounded HTTP error response body

OpenTelemetry.Exporter.OneCollector is a .NET exporter that sends telemetry to a OneCollector back-end over HTTP. In versions 1.15.0 and earlier, when a request to the configured back-end or collector results in an unsuccessful HTTP 4xx or 5xx response, the HttpJsonPostTransport class reads the...

CVE-2026-41483 Unbounded HTTP response body read in OpenTelemetry.Resources.Azure

OpenTelemetry.Resources.Azure is the .NET resource detector for Azure environments. In versions 1.15.0-beta.1 and earlier, the AzureVmMetaDataRequestor class makes HTTP requests to the Azure VM instance metadata service and reads the response body into memory without any size limit. An attacker w...

CVE-2026-41483

OpenTelemetry.Resources.Azure is the .NET resource detector for Azure environments. In versions 1.15.0-beta.1 and earlier, the AzureVmMetaDataRequestor class makes HTTP requests to the Azure VM instance metadata service and reads the response body into memory without any size limit. An attacker w...

CVE-2026-41483 Unbounded HTTP response body read in OpenTelemetry.Resources.Azure

OpenTelemetry.Resources.Azure is the .NET resource detector for Azure environments. In versions 1.15.0-beta.1 and earlier, the AzureVmMetaDataRequestor class makes HTTP requests to the Azure VM instance metadata service and reads the response body into memory without any size limit. An attacker w...

CVE-2026-41310 OpenTelemetry .NET Zipkin exporter has unbounded remote endpoint cache leading to memory growth

OpenTelemetry.Exporter.Zipkin is the .NET Zipkin exporter for OpenTelemetry. In versions 1.15.2 and earlier, the Zipkin exporter remote endpoint cache accepts unbounded key growth derived from span attributes. In high-cardinality scenarios, a process using Zipkin export for client or producer spa...

CVE-2026-44902

creationtimestamp| type| source ---|---|--- 2026-05-06 15:40:57+00:00| published-proof-of-concept| https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3 2026-05-27 17:02:41+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mmtye5ufzl2t...