How severe is CVE-2016-15049?

CVE-2016-15049 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-2016-15049 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-15049?

CVE-2016-15049 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-15049?

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

Does CVE-2016-15049 have an EU (EUVD) identifier?

Yes. CVE-2016-15049 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10798.

When was CVE-2016-15049 published?

CVE-2016-15049 was published on 2025-10-30 and last updated on 2026-06-17.

CVE-2016-15049

CVE-2016-15049 is a medium-severity vulnerability in Nagios Log Server with a CVSS 3.x base score of 5.4. 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 5.4)
CVSS v4: 5.1
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2016-10798
Weakness: CWE-79
Affected product: Nagios Log Server
Published: 2025-10-30
Last modified: 2026-06-17

Description

Nagios Log Server versions prior to 1.4.2 are vulnerable to cross-site scripting (XSS) in the Dashboards section when rendering log entries in the Logs table. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.

Frequently asked questions

What is CVE-2016-15049?: Nagios Log Server versions prior to 1.4.2 are vulnerable to cross-site scripting (XSS) in the Dashboards section when rendering log entries in the Logs table. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.
How severe is CVE-2016-15049?: CVE-2016-15049 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-2016-15049 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-15049?: CVE-2016-15049 affects Nagios Log Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-15049?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2016-15049 have an EU (EUVD) identifier?: Yes. CVE-2016-15049 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10798.
When was CVE-2016-15049 published?: CVE-2016-15049 was published on 2025-10-30 and last updated on 2026-06-17.

References

Affected products (1)

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

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