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critical vulnerability

sentence-transformers local model loading bypasses trust_remote_code and executes custom Python

Fix availableCritical · CVSS 9.3EPSS 0.91%

Published Jul 31, 2026 · updated Sep 30, 2026

What to do

  1. Upgrade to a fixed version: sentence-transformers 5.6.0.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

PyPIsentence-transformers5,106,641 downloads/week

Vulnerable versions
< 5.6.0
Fixed in
5.6.0

Check your project: pip show sentence-transformers

Sources

CWE-94 Improper Control of Generation of Code ('Code Injection')

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