# CVE-2023-39327: Openjpeg: malicious files can cause the program to enter a large loop

Status: published. Published: 2024-07-13. Updated: 2026-11-07.

A flaw was found in OpenJPEG. Maliciously constructed pictures can cause the program to enter a large loop and continuously print warning messages on the terminal.

## Remediation

No remediation reported in collected sources

## Affected products and versions

-  /  (openjpeg): 2.5.0 (affected, semver). Source: CNA: redhat
- Red Hat / Red Hat AI Inference Server 3.2 (rhaiis/model-opt-cuda-rhel9): ≥ 1772713830; < * (unaffected, rpm). Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 6 (openjpeg): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (openjpeg): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (openjpeg2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (gimp:flatpak/openjpeg2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (inkscape:flatpak/openjpeg2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (libreoffice:flatpak/openjpeg2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (openjpeg2): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (openjpeg2): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 4.3 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.56% as of 2026-11-06; percentile 46.46%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-400

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/errata/RHSA-2026:4128 (CNA: redhat; vendor-advisory, x_refsource_REDHAT)

- https://access.redhat.com/security/cve/CVE-2023-39327 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2295812 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://github.com/uclouvain/openjpeg/issues/1472 (CNA: redhat)

- https://access.redhat.com/security/cve/CVE-2023-39327 (ADP: CVE; vdb-entry, x_refsource_REDHAT, x_transferred)

- https://bugzilla.redhat.com/show_bug.cgi?id=2295812 (ADP: CVE; issue-tracking, x_refsource_REDHAT, x_transferred)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-39327; retrieved 2026-11-07; source updated 2026-11-07

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-39327; retrieved 2026-11-07; source updated Not reported

Revision: 2c24405047499224297beef4019f2408a03020b8247adf473fd3d4ecd8912ca9

Canonical: https://y2.dev/cve/CVE-2023-39327

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