Which products and versions are affected by CVE-2020-10821?

Affected: Nagios Xi versions 5.6.11. The full list is in the CVE brief.

Is CVE-2020-10821 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2020-10821 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2020-10821?

No public exploit code is known.

Is there a fix for CVE-2020-10821?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2020-10821 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2020-10821

Medium

Nagios XI 5.6.11 allows XSS via the account/main.php theme parameter.

Published Mar 22, 2020 · Updated Nov 21, 2024

Key Facts

Patch immediately

CVE-2020-10821 is a medium-severity vulnerability (CVSS 4.8 v3.1) affecting Nagios Xi.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 71% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

4.8

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS (30-day exploit likelihood)

71%

Higher than 99.4% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2020-10821 brief as a PDF

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Description

Nagios XI 5.6.11 allows XSS via the account/main.php theme parameter.

Affected Products

1 affected entries in total

Product	Affected versions	Fixed in
Nagios XiNagios	5.6.11	n/a

Timeline

Publicly disclosed
Mar 22, 2020
Last updated
Nov 21, 2024

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

exploithttps://code610.blogspot.com/2020/03/nagios-5611-xssd.html

FAQ

Common Questions.

Nagios XI 5.6.11 allows XSS via the account/main.php theme parameter.
Affected: Nagios Xi versions 5.6.11. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2020-10821 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.