CVE-2019-20490
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed...
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).
- Record
CVE-2019-20490- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.5 Medium
AV:N/AC:L/Au:S/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).
- Record
CVE-2019-20490- Updated
- 2026-11-02
EUVDEUVD-2019-11034 No score
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).
- Record
EUVD-2019-11034- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-242h-2cfm-6j4h No score
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed...
cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).
- Record
GHSA-242h-2cfm-6j4h- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-20490 is a high vulnerability (CVSS 8.8) in Cpanel, published March 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.13%, the 66th percentile. No source names a fixed version.