EUVD-2026-50058
GHSA-vhqp-r6hx-7vw5
Severity by source
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
Local vector, no privileges required, high integrity impact typical of prototype pollution.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM Observability with Instana (Agent) Build 1.0.303 through 1.0.320 IBM Instana Node.js tracer component @instana/core version 6.2.1 is vulnerable to prototype pollution through its configuration normalization API.
Articles & Coverage 2
AnalysisAI
Prototype pollution in the @instana/core Node.js tracer, part of IBM Observability with Instana Agent builds 1.0.303 to 1.0.320, allows a local attacker to inject arbitrary properties into JavaScript object prototypes. This can lead to information disclosure and high integrity impact. No public exploit or active exploitation reported; vendor patch is available.
Technical ContextAI
The vulnerability is a prototype pollution flaw (CWE-1321) in the configuration normalization API of the @instana/core Node.js tracer component, version 6.2.1. By manipulating input to this API, an attacker can pollute the fundamental object prototypes within the Node.js runtime, affecting all objects that inherit from them. The affected product is IBM Observability with Instana Agent, identified by CPE cpe:2.3:a:ibm:observability_with_instana_(agent):*.
RemediationAI
Apply the vendor-released patch by upgrading the Instana Agent to a fixed version. The advisory at https://www.ibm.com/support/pages/node/7281349 provides the exact fixed version. If immediate patching is not possible, restrict local access to the agent host and monitor for abnormal Node.js behavior, though this does not fully mitigate the prototype pollution risk.
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