Python Library OpenEXR 3.4.0 < 3.4.13 DoS (CVE-2026-53532)

high Nessus Plugin ID 341184

Synopsis

A Python library installed on the remote host is affected by a denial of service vulnerability.

Description

The version of the OpenEXR Python package installed on the remote host is 3.4.x prior to 3.4.13. It is, therefore, affected by a denial of service vulnerability:

- A crafted HTJ2K-compressed EXR file causes an unconditional process abort in any application that calls exr_start_read() on untrusted input. The crash is triggered by a QCD marker whose lower five bits are zero, which OpenEXR passes into the vendored OpenJPH library. OpenJPH uses an assertion rather than a recoverable error, so any invalid value calls abort() directly and cannot be intercepted by surrounding error handling.
(CVE-2026-53532)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to OpenEXR version 3.4.13 or later.

Plugin Details

Severity: High

ID: 341184

File Name: python_openexr_CVE-2026-53532.nasl

Version: 1.1

Type: Local

Agent: windows, macosx, unix

Family: Misc.

Published: 8/28/2026

Updated: 8/28/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

CVSS v2

Risk Factor: High

Base Score: 7.1

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-53532

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v4

Risk Factor: High

Base Score: 7.1

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/a:academysoftwarefoundation:openexr

Patch Publication Date: 6/23/2026

Vulnerability Publication Date: 6/23/2026

Reference Information

CVE: CVE-2026-53532

CWE: 617

IAVA: 2026-A-0904

Detections

Analytics