CVE-2026-54285
CVE-2026-54285 · opentelemetry-js: Unbounded memory allocation in W3C Baggage propagation
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.3 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
opentelemetry-js
- Versions
- < 2.8.0: Affected
No fix published
@opentelemetry/core npm
- Affected ranges
- SEMVER: < 2.8.0
Update to 2.8.0