CVE-2021-38156
CVE-2021-38156 is a medium-severity vulnerability in Nagios Nagios Xi with a CVSS 3.x base score of 5.4. Its EPSS exploit-prediction score of 89% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 89% (100th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Nagios Nagios Xi
- Published:
- Last modified:
Description
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
Frequently asked questions
- What is CVE-2021-38156?
- In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
- How severe is CVE-2021-38156?
- CVE-2021-38156 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-38156 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 89% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-38156?
- CVE-2021-38156 affects Nagios Nagios Xi. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-38156?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-38156 published?
- CVE-2021-38156 was published on 2021-09-15 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*
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