Code Injection in Smarty - CVE-2026-82531
Published: October 5, 2026
Vulnerability identifier: #VU153237
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-82531
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to missing nocache-hash restoration during cache regeneration. A remote attacker can execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Smarty
How to mitigate CVE-2026-82531
Install updates from vendor's website.
Smarty - addressed in versions 4.5.8, 5.8.5