XSS in Nagios Log Server
CVE-2021-35479
Nagios Log Server before 2.1.9 contains Stored XSS in the custom column view for the alert history and audit log function through the affected pp parameter. This affects users who open a crafted link or third-party web page.
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: 0.132 (96.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 96.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.132 · newest: 0.132 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.nagios.com/downloads/nagios-log-server/change-log/ (Vendor Advisory)
- research.nccgroup.com/ (Third Party Advisory)
- research.nccgroup.com/2021/07/22/technical-advisory-stored-and-reflected-xss-vu… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-35479?
- CVE-2021-35479 is a medium-severity vulnerability in Nagios Log Server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-07-30.
- How severe is CVE-2021-35479?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2021-35479 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.