CVE-2018-20172 json
An issue was discovered in Nagios XI before 5.5.8.
published 2018-12-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-12739
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
An issue was discovered in Nagios XI before 5.5.8. The rss_url parameter of rss_dashlet/magpierss/scripts/magpie_slashbox.php is not filtered, resulting in an XSS vulnerability.
Patch / fix
- nagios nagios_xi 5.5.8
Exploit prediction
1.59% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- seebug.org https://www.seebug.org/vuldb/ssvid-97714 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
seebug.org
/vuldb/ssvid-97714
exploit, third-party-advisory
-
nagios.com
/downloads/nagios-xi/change-log/
vendor-advisory
Sources
- CVE List CVE-2018-20172
- NVD CVE-2018-20172
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.