{"id":"CVE-2026-54390","state":"PUBLISHED","title":"JTL Shop < 5.7.2 Server-Side Template Injection via Smarty Renderer","description":"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.","publishedAt":"2026-06-18T17:33:46.230Z","updatedAt":"2026-10-29T21:15:43.423Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"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","source":"VulnCheck"},"assigner":"VulnCheck","products":["JTL Software JTL Shop"],"affected":[{"vendor":"JTL Software","product":"JTL Shop","defaultStatus":"affected","versions":[{"version":"5.0.0","status":"unaffected","lessThanOrEqual":"5.1.8","versionType":"semver"},{"version":"5.2.0","status":"affected","lessThan":"5.4.0","versionType":"semver"},{"version":"5.4.0","status":"affected","lessThan":"5.5.4","versionType":"semver"},{"version":"5.6.0","status":"affected","lessThan":"5.6.2","versionType":"semver"},{"version":"5.7.0","status":"affected","lessThan":"5.7.2","versionType":"semver"},{"version":"5.5.4","status":"unaffected","versionType":"semver"},{"version":"5.6.2","status":"unaffected","versionType":"semver"},{"version":"5.7.2","status":"unaffected","versionType":"semver"}]}],"references":["https://sansec.io/research/jtl-shop-ssti-rce","https://forum.jtl-software.de/threads/jtl-shop-5-7-aktuell-5-7-2.246278/","https://www.vulncheck.com/advisories/jtl-shop-server-side-template-injection-via-smarty-renderer"],"weaknesses":["CWE-1336"],"ingestedAt":"2026-10-29T23:12:04.845Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54390.json","commit":"dc7676b3f67d6707e4927968546e7e0125ff7ec7","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54390","state":"PUBLISHED","datePublished":"2026-06-18T17:33:46.230Z","dateUpdated":"2026-10-29T21:15:43.423Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-06-12T20:20:02.950Z"},"containers":{"cna":{"title":"JTL Shop < 5.7.2 Server-Side Template Injection via Smarty Renderer","descriptions":[{"lang":"en","value":"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. 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