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Fencer Vulns
critical 9.8

CVE-2020-26105 json

In cPanel before 88.0.3, insecure chkservd test credentials are used on a templated VM (SEC-554).

published 2020-09-25 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18735

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

In cPanel before 88.0.3, insecure chkservd test credentials are used on a templated VM (SEC-554).

Patch / fix

  • cpanel cpanel 88.0.3

Exploit prediction

1.42% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness

References

Sources

Fencer Vulns 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.