CVE-2020-10821
CVE-2020-10821 is a medium-severity vulnerability in Nagios Nagios Xi with a CVSS 3.x base score of 4.8. Its EPSS exploit-prediction score of 74% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 4.8)
- CVSS v2: 3.5
- EPSS exploit prediction: 74% (99th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Nagios Nagios Xi
- Published:
- Last modified:
Description
Nagios XI 5.6.11 allows XSS via the account/main.php theme parameter.
Frequently asked questions
- What is CVE-2020-10821?
- Nagios XI 5.6.11 allows XSS via the account/main.php theme parameter.
- How severe is CVE-2020-10821?
- CVE-2020-10821 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-10821 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 74% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-10821?
- CVE-2020-10821 affects Nagios Nagios Xi. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-10821?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-10821 published?
- CVE-2020-10821 was published on 2020-03-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nagios:nagios_xi:5.6.11:*:*:*:*:*:*:*
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