Use of Uninitialized Resource Affecting openexr package, versions [3.2.1,3.2.7)[3.3.0,3.3.9)[3.4.2,3.4.8)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CONAN-OPENEXR-15916984
- published6 Apr 2026
- disclosed3 Apr 2026
- creditUnknown
Introduced: 3 Apr 2026
NewCVE-2026-34543 (opens in a new tab)How to fix?
Upgrade openexr to version 3.2.7, 3.3.9, 3.4.8 or higher.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Resource in the undo_pxr24_impl function. An attacker can access sensitive heap memory contents by submitting a specially crafted EXR file that triggers the decoder to read uninitialized memory and include it in the output pixel data.