CVE-2026-82531

Published Oct 6, 2026·Updated Oct 6, 2026

NVD Description

Smarty before 4.5.8 and 5.x before 5.8.5 contains a code injection vulnerability where the top-level nocache_hash is never restored during extends:/multi-component template inheritance, leaving it null. Attackers can supply assigned data containing a forged SmartyNocache marker that is copied verbatim into the regenerated PHP cache file, executing arbitrary PHP on include for remote code execution.

Public Exploits & PoCs1 found

PoC: CVE-2026-82531

Smarty is vulnerable to code injection through template inheritance. Crafted assigned data can inject a forged SmartyNocache marker into regenerated PHP cache files, potentially allowing attackers to execute arbitrary PHP code. The issue affects Smarty 4.5.7 and earlier, and 5.8.4 and earlier.

CVSS Vector

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

References

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