CVE-2019-20493 json
cPanel before 82.0.18 allows self-XSS because JSON string escaping is mishandled (SEC-520).
published 6y ago modified 4mo ago also EUVD-2019-11037
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
cPanel before 82.0.18 allows self-XSS because JSON string escaping is mishandled (SEC-520).
Patch / fix
- cpanel cpanel 78.0.43, 82.0.18, 84.0.10
Is CVE-2019-20493 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
0.74% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/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
-
documentation.cpanel.net
/display/CL/82+Change+Log
vendor-advisory
Sources
- CVE List CVE-2019-20493
- NVD CVE-2019-20493
Fencer Intel 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.