How severe is CVE-2020-26109?

CVE-2020-26109 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2020-26109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26109?

CVE-2020-26109 affects Cpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26109?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-26109 published?

CVE-2020-26109 was published on 2020-09-25 and last updated on 2026-06-17.

CVE-2020-26109

CVE-2020-26109 is a high-severity vulnerability in Cpanel with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cpanel
Published: 2020-09-25
Last modified: 2026-06-17

Description

cPanel before 88.0.13 allows bypass of a protection mechanism that attempted to restrict package modification (SEC-557).

Frequently asked questions

What is CVE-2020-26109?: cPanel before 88.0.13 allows bypass of a protection mechanism that attempted to restrict package modification (SEC-557).
How severe is CVE-2020-26109?: CVE-2020-26109 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2020-26109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26109?: CVE-2020-26109 affects Cpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-26109 published?: CVE-2020-26109 was published on 2020-09-25 and last updated on 2026-06-17.

References

https://docs.cpanel.net/changelogs/88-change-log/

Affected products (1)

cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*

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