CVE-2026-65643

Q: How do I fix CVE-2026-65643?

Upgrade cpanel to 11.136.0.37 or later.

Q: Is CVE-2026-65643 being actively exploited?

Not that we know of. CVE-2026-65643 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.90% is the estimated probability that it will be exploited in the next 30 days. That is higher than 58% of all scored CVEs.

Q: How severe is CVE-2026-65643?

CVE-2026-65643 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-65643 affect?

Published advisories record a fix for cpanel (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

HIGH

8.8

CVSS v3

NVD

Description

Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.

CWE-95

How to fix

Remediation Available

cpanelNVD

Affected:>= 11.136.0.0, < 11.136.0.37Fixed in:11.136.0.37CVE-2026-65643derived from NVD

Affected:>= 11.138.0.0, < 11.138.0.2Fixed in:11.138.0.2CVE-2026-65643derived from NVD

Affected:>= 11.112.0.0, < 11.134.0.53Fixed in:11.134.0.53CVE-2026-65643derived from NVD

Affected:>= 11.138.1.0, < 11.138.1.7Fixed in:11.138.1.7CVE-2026-65643derived from NVD

Affected:< 11.110.0.141Fixed in:11.110.0.141CVE-2026-65643derived from NVD

Affected:< 110.0.141Fixed in:110.0.141CVE-2026-65643derived from NVD

Affected:>= 112.0.0, < 134.0.53Fixed in:134.0.53CVE-2026-65643derived from NVD

Affected:>= 136.0.0, < 136.0.37Fixed in:136.0.37CVE-2026-65643derived from NVD

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.90%probability of exploitation in 30 days

58thpercentile

Moderate risk: more likely to be exploited than 58% of all known CVEs.

References

Vendor Advisory1

support.cpanel.net

Related Vulnerabilities

Other CWE-95 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-24893	Critical	9.8	100%	KEV	Fix
CVE-2024-36401	Critical	9.8	100%	KEV	Fix
CVE-2026-33017	Critical	9.8	96%	KEV	Fix
CVE-2024-21650	Critical	10.0	93%	-	Fix
CVE-2023-37462	Critical	9.9	92%	-	Fix
CVE-2024-7954	Critical	9.8	90%	-	Fix

Common questions

How do I fix CVE-2026-65643?

Upgrade cpanel to 11.136.0.37 or later.

Is CVE-2026-65643 being actively exploited?

Not that we know of. CVE-2026-65643 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.90% is the estimated probability that it will be exploited in the next 30 days. That is higher than 58% of all scored CVEs.

How severe is CVE-2026-65643?

CVE-2026-65643 has a CVSS v3 base score of 8.8, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-65643 affect?

Published advisories record a fix for cpanel (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-65643

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-17.