CVE-2021-27231

5.4 mediumEPSS 1.4%

Medium (5.4) in hestiacp control panel. EPSS 1.4% chance of exploitation in the next 30 days.

Hestia Control Panel 1.3.5 and below, in a shared-hosting environment, sometimes allows remote authenticated users to create a subdomain for a different customer's domain name, leading to spoofing of services or email messages.

Severity

CVSS 3.1

5.4 medium

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

EPSS: 1.4% chance of exploitation in the next 30 days; higher than 72% of CVEs (scores of 2026-10-31)
Published: 2021-02-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

hestiacp:control_panel

References

https://github.com/hestiacp/hestiacp/issues/1622
https://github.com/sickcodes/security/blob/master/advisories/sick-2021-006.md
https://sick.codes/sick-2021-006
https://www.hestiacp.com/
https://github.com/hestiacp/hestiacp/issues/1622

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