XSS in Nagios Log Server
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (38.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Nagios Log Server — versions 0
- Nagios Log Server
Weakness classification (CWE)
References
- www.nagios.com/changelog/nagios-log-server-2024r1/ (release-notes, Release Notes, patch)
- www.vulncheck.com/advisories/nagios-log-server-dashboards-logs-table-xss (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2016-15049?
- CVE-2016-15049 is a medium-severity vulnerability in Nagios Log Server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-10-30.
- How severe is CVE-2016-15049?
- Medium severity. CVSS v3 base score is 5.4 out of 10.