CVE-2026-54285

opentelemetry-js: Unbounded memory allocation in W3C Baggage propagation

Published Jun 22, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 2.8.0, W3CBaggagePropagator.extract() in @opentelemetry/core does not enforce size limits when parsing inbound baggage HTTP headers. The W3C Baggage specification recommends a maximum of 8,192 bytes and 180 entries; these limits were only enforced on the outbound (inject()) path, not on the inbound (extract()) path. Parsing oversized baggage causes memory allocation proportional to the header size without any cap. This vulnerability is fixed in 2.8.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8988-4f7v-96qf OpenTelemetry Core: Unbounded memory allocation in W3C Baggage propagation
History
Type Values Removed Values Added
First Time appeared Opentelemetry opentelemetry
CPEs cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:node.js:*:*
Vendors & Products Opentelemetry opentelemetry
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Opentelemetry
Opentelemetry opentelemetry-js
Vendors & Products Opentelemetry
Opentelemetry opentelemetry-js
Type Values Removed Values Added
Description opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 2.8.0, W3CBaggagePropagator.extract() in @opentelemetry/core does not enforce size limits when parsing inbound baggage HTTP headers. The W3C Baggage specification recommends a maximum of 8,192 bytes and 180 entries; these limits were only enforced on the outbound (inject()) path, not on the inbound (extract()) path. Parsing oversized baggage causes memory allocation proportional to the header size without any cap. This vulnerability is fixed in 2.8.0.
Title opentelemetry-js: Unbounded memory allocation in W3C Baggage propagation
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 23, 2026, 4:11 PM
Reserved
Jun 12, 2026, 5:46 PM
Status
Analyzed
Published
Jun 22, 2026, 6:16 PM
Modified
Oct 25, 2026, 11:10 PM
Severity
Moderate
Public date
Jun 22, 2026, 4:52 PM