cvedb.io
CVE-2026-23886
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-01-19T21:15:52.597 · Last modified 2026-06-17T10:22:15.497

Summary

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 denial-of-service vulnerability due to improper input validation allows a remote attacker to crash the service via a malformed HTTP header. This 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 Context is through Swift OTel. Version 1.0.0-beta.5 of Swift W3C TraceContext and version 1.0.4 of Swift OTel contain a patch for this issue. As a workaround, disable either Swift OTel or the code that extracts the tra

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.