CVE-2026-39886

A flaw was found in OpenEXR, an image storage format for the motion picture industry. A remote attacker could exploit a signed integer overflow vulnerability in the HTJ2K (High-Throughput JPEG 2000) decompression path by providing a specially crafted EXR file. This flaw causes an internal bytes-per-line value to overflow, leading to undefined behavior. In certain environments, this could result in a heap out-of-bounds write, potentially causing a denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.