Nagios Log Server < 2.1.14 XSS via Snapshots Page

Advisories

severity: medium
date: October 30, 2025
Affecting: Log Server < 2.1.14
CVE: CVE-2023-7321
CWE: CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
CVSS: 5.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
References: Nagios Log Server Changelog
Credit: Ariane Blow
Description: Nagios Log Server versions prior to 2.1.14 are vulnerable to cross-site scripting (XSS) via the Snapshots Page. 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.