What is CVE-2020-25385?

CVE-2020-25385 is a medium-severity vulnerability in Nagios Log Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-20.

How severe is CVE-2020-25385?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-25385 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Nagios Log Server

CVE-2020-25385

Nagios Log Server 2.1.7 contains a cross-site scripting (XSS) vulnerability in /nagioslogserver/configure/create_snapshot through the snapshot_name parameter, which may impact users who open a maliciously crafted link or third-party web page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.162 (96.8th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.162 · newest: 0.162 · change: 0.000

Affected products

Nagios Log Server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

EmreOvunc/Nagios-Log-Server-2.1.7-Persistent-Cross-Site-Scripting

References

github.com/EmreOvunc/Nagios-Log-Server-2.1.7-Persistent-Cross-Site-Scripting (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-25385?: CVE-2020-25385 is a medium-severity vulnerability in Nagios Log Server, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-20.
How severe is CVE-2020-25385?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-25385 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.