5.3

CVE-2026-54285: open-telemetry opentelemetry-js

CVSS: 5.3v3.1MediumAnalyzed
AliasesCGA-473c-2p42-mx22CGA-5wrh-pvr5-j5h4CGA-62m3-q547-7vcm
Published 22-06-2026Last modified 23-06-2026
Open JSON

Vulnerability summary

CVE-2026-54285 is a medium (CVSS 5.3) vulnerability in open-telemetry opentelemetry-js. EPSS estimates a 0.40% chance of exploitation in the next 30 days, higher than 33% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.40%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-XHPH-HJ6Q-JQVX

Timeline

  1. 22-06-2026
    PublishedVulnerability first disclosed.
  2. 23-06-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.40%

Chance of exploitation in the next 30 days

Percentile

33%

Versus all other CVEs

30-day change

+0.06 pp

From 0.34% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.40%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard38 products
  • cadence-web< 4.0.15-r4
  • gemini-cli< 0.49.0-r1 | < 0.49.0-r0
  • kibana-7All versions (No fix recorded)
  • kibana-8.17< 8.17.10-r28
  • kibana-8.17-bitnami< 8.17.10-r28
Wolfi6 products
  • langfuse-3< 3.191.0-r0 | < 3.195.0-r0
  • langfuse-3-compat< 3.225.7-r6
  • langfuse-3-worker< 3.195.0-r0 | < 3.191.0-r0 | < 3.197.1-r0
  • opensearch-dashboards-3< 3.8.0-r0
  • pulumi-language-nodejs< 3.252.0-r0
@opentelemetry1 product
  • core< 2.8.0
Open-telemetry1 product
Opentelemetry1 product

5 vendors · 47 products

References

4 links