CVE-2018-20899 json
cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).
published 2019-08-01 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13437
- cvss
- 6.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).
Patch / fix
- cpanel cpanel 62.0.47, 68.0.39, 70.0.43, 71.9980.37
Exploit prediction
0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
-
news.cpanel.com
/cpanel-tsr-2018-0003-full-disclosure/
vendor-advisory
-
documentation.cpanel.net
/display/CL/72+Change+Log
product, release-notes
Sources
- CVE List CVE-2018-20899
- NVD CVE-2018-20899
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.