How severe is CVE-2019-15898?

CVE-2019-15898 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2019-15898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-15898?

CVE-2019-15898 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-15898?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-15898 published?

CVE-2019-15898 was published on 2019-09-03 and last updated on 2026-06-17.

CVE-2019-15898

CVE-2019-15898 is a medium-severity vulnerability in Nagios Log Server with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Nagios Log Server
Published: 2019-09-03
Last modified: 2026-06-17

Description

Nagios Log Server before 2.0.8 allows Reflected XSS via the username on the Login page.

Frequently asked questions

What is CVE-2019-15898?: Nagios Log Server before 2.0.8 allows Reflected XSS via the username on the Login page.
How severe is CVE-2019-15898?: CVE-2019-15898 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-15898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-15898?: CVE-2019-15898 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-15898?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-15898 published?: CVE-2019-15898 was published on 2019-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:nagios:log_server:*:*:*:*:*:*:*:*

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