opentelemetry-js: Unbounded memory allocation in W3C Baggage propagation_CVE-2026-54285

5.3 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-54285

Source GitHub_M

Published Jun 22, 2026 at 16:52

Affected Product

Vendor open-telemetry

Product opentelemetry-js

Version < 2.8.0

Affected Versions open-telemetry opentelemetry-js < 2.8.0

CWE Classification

CWE-770

References

github.com /open-telemetry/opentelemetry-js/security/advisories/GHSA-8988-4f7v-96qf

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