CVE-2021-47700 Nagios XI < 5.8.7 Insecure Permissions on Highcharts Temporary Directory

Q: What is CVE-2021-47700?

CVE-2021-47700 is a high-severity vulnerability in Nagios Nagios Xi, published on 30 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Q: Is CVE-2021-47700 being exploited?

There is no known exploitation of CVE-2021-47700 in the wild and no public exploit code.

Q: How do I fix CVE-2021-47700?

No fix has been published for CVE-2021-47700 yet. Limit exposure of the affected software until one is available.

High 8.5 Published 30 Oct 2025 Updated 17 Nov 2025

Local attackers can read or modify Highcharts export files due to insecure permissions, potentially leading to data disclosure or tampering.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-47700?

CVE-2021-47700 is a high-severity vulnerability in Nagios Nagios Xi, published on 30 Oct 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Nagios XI versions prior to 5.8.7 used a temporary directory for Highcharts exports with overly permissive ownership/permissions under the Apache user. Local or co-hosted processes could read/overwrite export artifacts or manipulate paths, risking disclosure or tampering and potential code execution depending on deployment.

Weakness: CWE-250

Which versions are affected by CVE-2021-47700?

It affects 1 product.

Products include Nagios Nagios Xi.

How do I fix CVE-2021-47700?

No fix has been published for CVE-2021-47700 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-47700 being exploited?

There is no known exploitation of CVE-2021-47700 in the wild and no public exploit code.

All Nagios Nagios Xi vulnerabilities

Sources

Also known as GHSA-32f6-jrx4-x77h.