This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-82531 →

DEBIAN-CVE-2026-82531

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:/mu...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV