Track vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
3.7

langfuse may allow unauthorized actions through gRPC JavaScript

published 4 days ago
Summary

The langfuse package uses the @grpc/grpc-js library, which runs gRPC entirely in JavaScript. This can be exploited to perform actions you did not intend, potentially exposing data or system behavior. Upgrade to a version of langfuse that includes the latest @grpc/grpc-js updates or apply the vendor’s recommended patch as soon as possible.

What to do
  • Update cleanstart langfuse to version 4.35.0-r1.
Affected software
Ecosystem VendorProductAffected versions
CleanStart cleanstart langfuse < 4.35.0-r1
Fix: upgrade to 4.35.0-r1
Original advisory text
@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon
Security vulnerability affects the langfuse package. @grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
3.7 Low
Timeline
Published15 Oct 2026
Updated15 Oct 2026
First seen15 Oct 2026
Sources
CLEANSTART-2026-AF37624 · OSV
Track software like this
Free during beta