CVE-2026-34543
Published:April 01, 2026
Updated:April 20, 2026
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From version 3.4.0 to before version 3.4.8, sensitive information from heap memory may be leaked through the decoded pixel data (information disclosure). This occurs under default settings; simply reading a malicious EXR file is sufficient to trigger the issue, without any user interaction. This issue has been patched in version 3.4.8.
Affected Packages
openexr (CONDA):
Affected version(s) >=3.4.0 <3.4.8Fix Suggestion:
Update to version 3.4.8https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.4.0 <v3.4.8Fix Suggestion:
Update to version v3.4.8https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.3.0 <v3.3.9Fix Suggestion:
Update to version v3.3.9https://github.com/AcademySoftwareFoundation/openexr.git (GITHUB):
Affected version(s) >=v3.2.0 <v3.2.7Fix Suggestion:
Update to version v3.2.7openexr (PYTHON):
Affected version(s) >=3.4.0 <3.4.8Fix Suggestion:
Update to version 3.4.8Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Use of Uninitialized Resource
EPSS
Base Score:
0.04
