CVE-2026-42216
Published: May 12, 2026Last modified: May 13, 2026
Description
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. From versions 3.0.0 to before 3.2.9, 3.3.0 to before 3.3.11, and 3.4.0 to before 3.4.11, IDManifest::init() reconstructs strings from a prefix-compressed representation. If the previous string is longer than 255 bytes, the next string is expected to begin with a 2-byte prefix length. The code reads stringList[i][0] and stringList[i][1] without checking that the current string has at least two bytes. This issue has been patched in versions 3.2.9, 3.3.11, and 3.4.11.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 9.1 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | Stream | openexr | Fixed (3.4.11-r0) |
References
- https://access.redhat.com/errata/RHSA-2026:38498
- https://access.redhat.com/errata/RHSA-2026:38499
- https://access.redhat.com/errata/RHSA-2026:39024
- https://access.redhat.com/errata/RHSA-2026:39025
- https://access.redhat.com/errata/RHSA-2026:39026
- https://access.redhat.com/errata/RHSA-2026:39027
- https://access.redhat.com/security/cve/CVE-2026-42216
- https://bugzilla.redhat.com/show_bug.cgi?id=2467633
- https://github.com/AcademySoftwareFoundation/openexr/security/advisories/GHSA-65j8-95g9-jgj4
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42216.json