AIKIDO-2026-567866
OpenEXR is vulnerable to Information Disclosure
33
Low Risk
This Affects:
OpenEXRTL;DR
OpenEXR's deep NO_COMPRESSION scanline path, embedded in the PyPI OpenEXR extension, accepts a chunk whose sample payload is shorter than required for the declared deep samples. The short sample data leaves part of the decode buffer uninitialized, and those bytes can be exposed through decoded deep sample output via 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 uncompressed deep-scanline 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