Medium [CVE-2026-59152] Information Disclosure via Arbitrary Server-Side File Read
This medium-severity Red Hat Linux advisory covers CVE-2026-59152 affecting Exploit Intelligence, Migration Toolkit for Applications 8, OpenShift Lightspeed.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published Record updated
Summary
LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.8.18, an attacker who can send an HTTP request to a server running the LangSmith SDK's TracingMiddleware can cause that server to read an arbitrary file from its local filesystem and upload the contents to LangSmith as a trace attachment.
Depending on how the distributed trace system is deployed, triggering a read may not require authentication. Retrieving the contents requires read access to the LangSmith workspace the traces are sent to.
The net effect is a trust-boundary crossing: a party with workspace trace-read access (for example a low-privilege workspace member, a contractor, or a compromised teammate account) gains the ability to read files from any server running TracingMiddleware, a capability outside that workspace's intended trust boundary. This vulnerability is fixed in 0.8.18.
This Moderate-impact information disclosure flaw in LangSmith Client SDK's TracingMiddleware allows an authenticated attacker with trace-read access to a LangSmith workspace to read arbitrary files from a server running the middleware.
This represents a trust-boundary crossing, enabling unauthorized access to local filesystem data on affected systems where the TracingMiddleware is exposed via HTTP. Red Hat severity: Moderate — CVSS 5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N).
Is CVE-2026-59152 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-59152 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-59152?
Upgrade to a fixed release named by Red Hat:
- 0.8.18
Confirm against the vendor advisory before you patch.
- < 0.8.18
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation
Upgrade to a fixed release: 0.8.18. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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