OpenTelemetry-Go: Eager W3C baggage-property materialization causes bounded memory-allocation amplification

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-128086
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-13 19:19:31 UTC
Updated2026-11-13 19:19:31 UTC
DescriptionOpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.0.0-RC1 until version 1.47.0, baggage.Parse and propagation.Baggage.Extract eagerly materialize every W3C baggage property through parseMember, grow property slices, serialize members, and copy properties into internal/baggage.Item. A valid densely populated baggage header can therefore cause allocation traffic and retained memory disproportionate to its bounded input size. Remote impact requires baggage extraction to be enabled, attacker-controlled input to reach it, and extraction to run before authentication or on a public route; the evidence establishes increased allocation and garbage-collection pressure but not reliable process termination. This issue is fixed in version 1.47.0.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS: 0.004360000 probability, percentile 0.384900000 (date 2026-11-14)

Problem Types: CWE-400 | CWE-405 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-405 CWE-405: Asymmetric Resource Consumption (Amplification)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Open-telemetry Opentelemetry-go affected >= 1.0.0-RC1, < 1.47.0 Not specified

References

ReferenceSourceLinkTags
github.com/open-telemetry/opentelemetry-go/releases/tag/v1.47.0 [email protected] github.com
github.com/open-telemetry/opentelemetry-go/commit/f09d1de32f4ac7e5ef1639... [email protected] github.com
github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-rrfc... [email protected] github.com
github.com/open-telemetry/opentelemetry-go/pull/9024 [email protected] github.com
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