AIKIDO-2026-784609
OpenEXR is vulnerable to Information Disclosure
33
Low Risk
This Affects:
OpenEXRTL;DR
OpenEXR's ZIP inflate path, embedded in the PyPI OpenEXR extension, accepts a compressed stream that expands to fewer bytes than the destination channel requires. The short inflate leaves part of the output buffer uninitialized, and those bytes can be copied into caller-visible pixels when the EXR is decoded through the Python bindings. The fix rejects undersized compressed or raw streams before reconstructing full channel rows.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you decode untrusted ZIP-compressed EXR files through the OpenEXR Python bindings.
Background info
OpenEXR is vulnerable to Information Disclosure in versions 3.2.3 - 3.4.13.
How to fix this
Upgrade the OpenEXR library to the patch version.
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SOC 2Compliant
ISO 27001Compliant