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Vulnerabilities CVE-2026-48504

CVE-2026-48504

Medium
Open
TLP:CLEAR

OpenTelemetry Rust: Unbounded memory allocation in W3C Baggage propagation

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

CVSS Score
5.3
EPSS Score
0.30%

22.9th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Confidence
90%
Published
Jul 17, 2026
Last Modified
Jul 17, 2026
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