Bug 2542568

Summary: CVE-2026-39882 golang-opentelemetry-otel-0.20: OpenTelemetry-Go: Memory exhaustion via uncapped HTTP response body reading [fedora-all]
Product: [Fedora] Fedora Reporter: Praise Ogwuche <pogwuche>
Component: golang-opentelemetry-otel-0.20Assignee: Orphan Owner <extras-orphan>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: extras-orphan, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
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Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e6eb769f-3339-4551-89f4-71dfd58af921"]}
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2456727    

Description Praise Ogwuche 2026-09-28 17:08:23 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can mitm the exporter connection). This vulnerability is fixed in 1.43.0.