SEPTEMBER 8, 2026
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Case File

CVE-2026-48504

MEDIUM · CVSS 5.3 EPSS 0.30% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-17 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The OpenTelemetry Rust implementation prior to version 0.32.1 is vulnerable due to improper enforcement of W3C Baggage size limits in the BaggagePropagator::extract_with_context function, allowing attackers to send oversized headers. This can lead to increased CPU usage and memory allocations, potentially degrading service performance for applications that process untrusted inbound headers. Organizations utilizing this SDK should prioritize upgrading to version 0.32.1 to mitigate the risk of resource exhaustion attacks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-48504
Severity
MEDIUM
CVSS
5.3
EPSS
0.30%

Original NVD 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.