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9.8

langfuse package could let attackers modify data

published 1 month ago
Summary

The langfuse software library has a weakness that could allow a malicious user to change or tamper with information it processes. This could affect the integrity of any system that relies on langfuse for data handling. Update the package to the latest version or apply the vendor’s recommended patch as soon as possible.

What to do
  • Update cleanstart langfuse to version 3.225.9-r1.
Affected software
Ecosystem VendorProductAffected versions
CleanStart cleanstart langfuse < 3.225.9-r1
Fix: upgrade to 3.225.9-r1
Original advisory text
### Summary When `qs
Security vulnerability affects the langfuse package. ### Summary When `qs.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker full control (estimated)
Severity
9.8 Critical
Timeline
Published29 Sep 2026
Updated29 Sep 2026
First seen29 Sep 2026
Sources
CLEANSTART-2026-MU53391 · OSV
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