No exploitation reportedFix available

CVE-2019-20498

Q: Is CVE-2019-20498 actively exploited?

Active exploitation of CVE-2019-20498 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2019-20498?

CVE-2019-20498 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2020-03-17
Fixed in84.0.10 · 82.0.18 · 78.0.43

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

cPanel before 82.0.18 allows WebDAV authentication bypass because the connection-sharing logic is incorrect (SEC-534).

Timeline

dates in UTC

2020-03-1715:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-20498?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-20498?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

cPanel

Branch	Affected	Fixed in	Source
84.0	≥ 83.9999.115, < 84.0.10	84.0.10	NVD
82.0	≥ 81.9999.242, < 82.0.18	82.0.18	NVD
78.0	≥ 77.9999.110, < 78.0.43	78.0.43	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update cPanel to 84.0.10 · 82.0.18 · 78.0.43

Advisories and patches

documentation.cpanel.netVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.19.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2020-03-17
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-20498?

cPanel before 82.0.18 allows WebDAV authentication bypass because the connection-sharing logic is incorrect (SEC-534).

Is CVE-2019-20498 actively exploited?

Active exploitation of CVE-2019-20498 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-20498?

CVE-2019-20498 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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