Heap Data Exposure Vulnerability in OpenEXR's Python Bindings
CVE-2026-62986

4.3MEDIUM

Key Information:

Status
Vendor
CVE Published:
25 August 2026

What is CVE-2026-62986?

The OpenEXR Python bindings in specific versions suffer from a vulnerability where uninitialized heap data can be exposed when processing deep scanline EXR images with prefixed RGB channels. The default channel coalescing fails to correctly handle layer-prefixed channel names, resulting in incorrect decoding and potentially allowing untrusted Python applications to log or manipulate unchanged heap content. This vulnerability underscores the necessity for users to update to secure versions to mitigate the risk of unintended data exposure.

Affected Version(s)

openexr >= 3.3.0, < 3.3.13 < 3.3.0, 3.3.13

openexr >= 3.4.0, < 3.4.14 < 3.4.0, 3.4.14

References

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.