CVE-2018-20921
CVE-2018-20921 is a medium-severity vulnerability in Cpanel with a CVSS 3.x base score of 6.1. 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (47th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Cpanel
- Published:
- Last modified:
Description
cPanel before 70.0.23 allows stored XSS via a WHM "Delete a DNS Zone" action (SEC-375).
Frequently asked questions
- What is CVE-2018-20921?
- cPanel before 70.0.23 allows stored XSS via a WHM "Delete a DNS Zone" action (SEC-375).
- How severe is CVE-2018-20921?
- CVE-2018-20921 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2018-20921 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-20921?
- CVE-2018-20921 affects Cpanel. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-20921?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-20921 published?
- CVE-2018-20921 was published on 2019-08-01 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cpanel:cpanel:*:*:*:*:*:*:*:*
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