Vulnerability Description
OpenTelemetry Rust is the Rust OpenTelemetry implementation. In 0.32.0 and earlier, BaggagePropagator::extract_with_context in opentelemetry_sdk did not enforce W3C Baggage size limits before parsing an inbound baggage header, so a large attacker-controlled header could cause unnecessary CPU work and short-lived heap allocations while parsing entries later discarded by the SDK's baggage storage limits. Services that accept untrusted inbound propagation headers may experience increased per-request resource usage when processing oversized baggage headers. This issue is fixed in version 0.32.1.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/open-telemetry/opentelemetry-rust/commit/a389ca6b3e416416bc8f
- https://github.com/open-telemetry/opentelemetry-rust/security/advisories/GHSA-w9
FAQ
What is CVE-2026-48504?
CVE-2026-48504 is a vulnerability with a CVSS score of 5.3 (MEDIUM). OpenTelemetry Rust is the Rust OpenTelemetry implementation. In 0.32.0 and earlier, BaggagePropagator::extract_with_context in opentelemetry_sdk did not enforce W3C Baggage size limits before parsing ...
How severe is CVE-2026-48504?
CVE-2026-48504 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48504?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.