CVE-2018-20877

Home/CVE/cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).

CVE

cPanel before 74.0.8 allows self XSS in WHM Style Upload interface (SEC-437).

MEDIUM · CVSS 5.4 EPSS 0.00221

Monitor

No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence

Sigma rules0 YARA rules0

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Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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Affected Products & Versions

cpanel< 74.0.8

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Scoring & Timeline

5.4

MEDIUM · CVSS v3.0 · cve@mitre.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD01 Aug 2019 · 01:15 PM

CVSS VectorCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://documentation.cpanel.net/display/CL/74+Change+LogProductRelease Notes

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Detection & defense
Sigma rules
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Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1

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