CVE-2018-20877
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
- Record
CVE-2018-20877- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
- Record
CVE-2018-20877- Updated
- 2026-11-02
EUVDEUVD-2018-13415 No score
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
- Record
EUVD-2018-13415- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3frx-qxqr-3j3r
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).
- Record
GHSA-3frx-qxqr-3j3r- CVSS 3.0
- 5.4 Medium
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-20877 is a medium vulnerability (CVSS 5.4) in Cpanel, published August 1, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.