datadog-opentelemetry has unbounded W3C tracestate parsing that may lead to DoS

Impact Datadog tracing libraries that implement W3C Trace Context tracecontext propagation parse the incoming tracestate header without enforcing a size cap on the Datadog vendor entry dd=.... The dd= value contains semicolon-separated key:value pairs, and the parser allocates a hash-map entry fo...

Swift W3C TraceContext vulnerable to a malformed HTTP header causing a crash

Impact A denial-of-service vulnerability due to improper input validation allows a remote attacker to crash the service via a malformed HTTP header. Allows crashing the process with data coming from the network when used with, for example, an HTTP server. Most common way of using Swift W3C Trace...

CVE-2026-23886

Swift W3C TraceContext is a Swift implementation of the W3C Trace Context standard, and Swift OTel is an OpenTelemetry Protocol OTLP backend for Swift Log, Swift Metrics, and Swift Distributed Tracing. Prior to Swift W3C TraceContext version 1.0.0-beta.5 and Swift OTel version 1.0.4, a...

CVE-2026-23886

The CVE-2026-23886 affects the Swift W3C TraceContext component and the Swift OTel OTLP backend when used together; versions prior to 1.0.0-beta.5 (TraceContext) and 1.0.4 (OTel) are vulnerable to a denial-of-service via malformed HTTP headers that fail input validation and can crash the process ...

CVE-2026-23886: Improper Input Validation

Swift W3C TraceContext is a Swift implementation of the W3C Trace Context standard, and Swift OTel is an OpenTelemetry Protocol OTLP backend for Swift Log, Swift Metrics, and Swift Distributed Tracing. Prior to Swift W3C TraceContext version 1.0.0-beta.5 and Swift OTel version 1.0.4, a...