How severe is CVE-2021-37353?

CVE-2021-37353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-37353 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37353?

CVE-2021-37353 affects Nagios Nagios Xi Docker Wizard. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-37353?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-37353 published?

CVE-2021-37353 was published on 2021-08-13 and last updated on 2026-06-17.

CVE-2021-37353

CVE-2021-37353 is a critical-severity vulnerability in Nagios Nagios Xi Docker Wizard with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Nagios Nagios Xi Docker Wizard
Published: 2021-08-13
Last modified: 2026-06-17

Description

Nagios XI Docker Wizard before version 1.1.3 is vulnerable to SSRF due to improper sanitation in table_population.php.

Frequently asked questions

What is CVE-2021-37353?: Nagios XI Docker Wizard before version 1.1.3 is vulnerable to SSRF due to improper sanitation in table_population.php.
How severe is CVE-2021-37353?: CVE-2021-37353 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-37353 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37353?: CVE-2021-37353 affects Nagios Nagios Xi Docker Wizard. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-37353?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-37353 published?: CVE-2021-37353 was published on 2021-08-13 and last updated on 2026-06-17.

References

https://www.nagios.com/downloads/nagios-xi/change-log/

Affected products (1)

cpe:2.3:a:nagios:nagios_xi_docker_wizard:*:*:*:*:*:*:*:*

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