AIKIDO-2026-872621
OpenEXR is vulnerable to Information Disclosure
33
Low Risk
This Affects:
OpenEXRTL;DR
OpenEXR's DWAA/DWAB decoder, embedded in the PyPI OpenEXR extension, accepts a valid but too-short DWA RLE raw stream for an RLE-classified channel. The decoder expands only the attacker-declared RLE_RAW_SIZE and then reconstructs the full channel from the planar buffer, copying uninitialized tail bytes into caller-visible pixels. 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 DWAA/DWAB-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