CVE-2021-27231 json
Hestia Control Panel 1.3.5 and below, in a shared-hosting environment, sometimes allows remote authenticated users to create a subdomain fo…
published 2021-02-16 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13996
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.41% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- sick.codes https://sick.codes/sick-2021-006 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 2.0 | 5.5 | AV:N/AC:L/Au:S/C:P/I:P/A:N |
References
-
sick.codes
/sick-2021-006
exploit, third-party-advisory
-
hestiacp.com
/
vendor-advisory
-
github.com
/hestiacp/hestiacp/issues/1622
third-party-advisory
-
github.com
/sickcodes/security/blob/master/advisories/sick-2021-006.md
broken-link
Sources
- CVE List CVE-2021-27231
- NVD CVE-2021-27231
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.