EUVD-2026-42324Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Remote unauthenticated single-request crash with no interaction gives AV:N/AC:L/PR:N/UI:N; impact is process termination only, so C:N/I:N/A:H.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
2DescriptionCVE.org
OpenTelemetry JavaScript is the OpenTelemetry JavaScript client. Prior to 2.9.0, @opentelemetry/propagator-jaeger decodes incoming uber-trace-id and uberctx-* HTTP header values with decodeURIComponent() without handling decode errors, allowing an unauthenticated remote attacker to send a malformed percent-encoded value that throws an uncaught URIError and terminates a Node.js process using JaegerPropagator as the active propagator. This issue is fixed in version 2.9.0.
Articles & Coverage 1
AnalysisAI
Denial of service in OpenTelemetry JavaScript (@opentelemetry/propagator-jaeger) before 2.9.0 allows an unauthenticated remote attacker to crash a Node.js service by sending a malformed percent-encoded uber-trace-id or uberctx-* HTTP header. The JaegerPropagator passes header values to decodeURIComponent() without catching the resulting URIError, so the uncaught exception terminates the process. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target Node.js service uses OpenTelemetry JS's JaegerPropagator as its active/configured propagator and exposes an HTTP endpoint that parses incoming trace-context headers - this is the concrete, required precondition (the code path is not reached under the default non-Jaeger propagator configuration). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (score 7.5) is internally consistent with the description: a network-reachable, low-complexity, unauthenticated request with no user interaction yields a pure availability impact (C:N/I:N) - a process crash with no data exposure or integrity loss. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker identifies a public HTTP endpoint fronted by a Node.js service that uses the Jaeger propagator to accept distributed-trace headers. They send a single request with a header such as 'uber-trace-id: %' (an invalid percent sequence), causing decodeURIComponent() to throw an uncaught URIError that crashes the Node.js process and drops all in-flight requests. … |
| Remediation | Vendor-released patch: upgrade @opentelemetry/propagator-jaeger (and the OpenTelemetry JS packages) to version 2.9.0 or later, which adds error handling around the decodeURIComponent() call (fix commit b1c196d49d54caae59741cca0a9d57d101d7ea88). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all Node.js services using @opentelemetry/propagator-jaeger and current version numbers. …
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