---
id: "CVE-2026-107080"
kind: "vulnerability"
aliases: ["CVE-2026-107080"]
title: "OpenJPEG: out-of-bounds read and write in DWT encoder causes denial of service"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["c-libraries", "image-processing", "openjpeg", "package"]
not_affected_if: ["decode-only-use", "unaffected-version"]
published_at: "2026-10-26T16:17:10+00:00"
first_seen_at: "2026-10-26T16:31:01+00:00"
updated_at: "2026-10-26T16:33:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107080", "first_seen_at": "2026-10-26T16:31:01+00:00"}]
---

# OpenJPEG: out-of-bounds read and write in DWT encoder causes denial of service

OpenJPEG 2.4.0 through 2.5.4 and git master through commit 8314119b have an out-of-bounds read and write in opj_dwt_encode_and_deinterleave_v() in src/lib/openjp2/dwt.c. An attacker can use it to crash the process, causing a denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed OpenJPEG version with `opj_decompress -h` or your package manager, and compare against `2.4.0` through `2.5.4`.
- Check whether your build includes commit `8314119b` or later from git master.

## Fix

- Upgrade OpenJPEG to a version later than `2.5.4` once a patched release is confirmed (unknown in the sources).

## Timeline

- 2026-10-26T16:31:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107080

## From the sources

OpenJPEG 2.4.0 through 2.5.4, and git master through commit 8314119b, contains an out-of-bounds read and write in opj_dwt_encode_and_deinterleave_v() in src/lib/openjp2/dwt.c. This allows an attacker to cause a denial of service.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_