Description
HestiaCP before 1.9.5 contains an authenticated OS command injection vulnerability that allows low-privilege authenticated users to execute arbitrary commands as root by injecting a single-quote character into unvalidated DNS record types. Attackers can exploit insufficient input validation in is_dns_record_format_valid() combined with unsafe eval-based parsing in update_domain_zone() to prematurely close a variable assignment string and achieve full root code execution on the underlying host in a single DNS record creation step.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| hestiacp | hestiacp | < 1.9.5 |
References
- https://github.com/hestiacp/hestiacp/commit/a74babb739aa92e52b12d6ef52b6b9428ffbbb67Patch
- https://github.com/hestiacp/hestiacp/pull/5197Issue Tracking, Patch
- https://github.com/hestiacp/hestiacp/releases/tag/1.9.5Release Notes
- https://www.vulncheck.com/advisories/hestiacp-authenticated-os-command-injection-via-dns-record-managementThird Party Advisory
Timeline
- Published
- Jul 10, 2026
- Last modified
- Sep 29, 2026
- NVD status
- Analyzed