๐Ÿ›ก๏ธ CVE-2026-43633
๐Ÿ”ด CVSS 10.0 โ€” Critical โœ… No Known Exploit CWE-502 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

HestiaCP versions 1.9.0 through 1.9.4 contain a deserialization vulnerability in the web terminal component caused by a session format mismatch between PHP and Node.js that allows unauthenticated remote attackers to achieve root-level code execution. Attackers can inject crafted data into HTTP headers that are processed by the PHP session handler but incorrectly deserialized by the Node.js web terminal component as trusted session values, resulting in arbitrary command execution on systems with the web terminal feature enabled.

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-502
Public Exploit โœ… No
Source NVD
Published 2026-05-19
Updated 2026-06-02
Modified 2026-05-19
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown โ€” โ€”

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