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orjson library can cause crashes with very deep data

published 6 months ago
Summary

Applications that use the orjson library to turn information into JSON text can stop working if the information is organized in many layers. This can lead to the program running out of memory or freezing. Updating to the latest version of the library (3.11.6 or newer) or avoiding excessively layered data solves the problem.

What to do
  • Update orjson to version 3.10.18+echo.1.
Affected software
Ecosystem VendorProductAffected versions
PyPI – orjson < 3.10.18+echo.1
Fix: upgrade to 3.10.18+echo.1
Original advisory text
ECHO-7f2f-e83a-5508
Timeline
Published14 Apr 2026
Updated14 Apr 2026
First seen14 Apr 2026
Sources
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