CVE-2020-26100

Name: CVE-2020-26100
Creator: NVD / NIST
Published: 2020-09-25T06:15:13.753+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.61%

Last modified Jun 17, 2026

CVE-2020-26100 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. chsh in cPanel before 88.0.3 allows a Jailshell escape (SEC-497).. EPSS estimates a 1.61% chance of exploitation in the next 30 days.

Description

chsh in cPanel before 88.0.3 allows a Jailshell escape (SEC-497).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.61%

72.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cpanel	Cpanel	< 88.0.3

References

https://docs.cpanel.net/changelogs/88-change-log/Release Notes, Vendor Advisory
https://docs.cpanel.net/changelogs/88-change-log/Release Notes, Vendor Advisory

Timeline

Published: Sep 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26100?

chsh in cPanel before 88.0.3 allows a Jailshell escape (SEC-497).

How severe is CVE-2020-26100?

CVE-2020-26100 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26100?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-26100?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST