How severe is CVE-2021-38584?

CVE-2021-38584 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38584 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38584?

CVE-2021-38584 affects Cpanel. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38584?

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-2021-38584 published?

CVE-2021-38584 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2021-38584

CVE-2021-38584 is a high-severity vulnerability in Cpanel with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Cpanel
Published: 2021-08-11
Last modified: 2026-06-17

Description

The WHM Locale Upload feature in cPanel before 98.0.1 allows XXE attacks (SEC-585).

Frequently asked questions

What is CVE-2021-38584?: The WHM Locale Upload feature in cPanel before 98.0.1 allows XXE attacks (SEC-585).
How severe is CVE-2021-38584?: CVE-2021-38584 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38584 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38584?: CVE-2021-38584 affects Cpanel. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38584?: 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-2021-38584 published?: CVE-2021-38584 was published on 2021-08-11 and last updated on 2026-06-17.

References

https://docs.cpanel.net/changelogs/98-change-log/

Affected products (1)

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

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