CVE-2026-54390Published

JTL Shop < 5.7.2 Server-Side Template Injection via Smarty Renderer

Exact source revision recorded 29 Oct 2026 21:48:56 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-54390

Published

JTL Shop versions 5.2.0 through 5.7.1 contains a server-side template injection vulnerability that allows unauthenticated attackers to inject malicious template syntax due to unsanitized user-supplied input passed to the Smarty template engine. Attackers can exploit this flaw to read sensitive server-side values such as database credentials and encryption keys, and on versions 5.4.0 through 5.7.1, leverage registered Smarty modifiers including unserialize and file_get_contents to write a webshell to the web root and execute arbitrary commands as the web server user.

Source published: 18 Jun 2026 17:33:46 UTC
Source modified: 29 Oct 2026 20:19:30 UTC
Observed here: 29 Oct 2026 21:48:56 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1 · 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H