Is CVE-2026-54285 actively exploited?

No active exploitation of CVE-2026-54285 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-54285 be exploited remotely?

Yes. CVE-2026-54285 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-54285?

CVE-2026-54285 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2026-54285

CWE-770Published: June 22, 2026· Updated: Jun 23, 2026

5.3

CVSS v3.1

EPSS:0.24%probability of exploitation in 30 daysPercentile:14.5th

Official 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.

NVD Source

Technical Analysis

CVE-2026-54285 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.