{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-54390", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-06-12T20:20:02.950Z", "datePublished": "2026-06-18T17:33:46.230Z", "dateUpdated": "2026-10-29T21:15:43.423Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-10-29T21:15:43.423Z" }, "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. 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." } ], "tags": [ "x_open-source" ], "datePublic": "2026-04-08T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-1336", "description": "Improper Neutralization of Special Elements Used in a Template Engine", "type": "CWE" } ] } ], "affected": [ { "defaultStatus": "affected", "vendor": "JTL Software", "product": "JTL Shop", "versions": [ { "status": "unaffected", "version": "5.0.0", "versionType": "semver", "lessThanOrEqual": "5.1.8" }, { "status": "affected", "version": "5.2.0", "versionType": "semver", "lessThan": "5.4.0" }, { "status": "affected", "version": "5.4.0", "versionType": "semver", "lessThan": "5.5.4" }, { "status": "affected", "version": "5.6.0", "versionType": "semver", "lessThan": "5.6.2" }, { "status": "affected", "version": "5.7.0", "versionType": "semver", "lessThan": "5.7.2" }, { "status": "unaffected", "version": "5.5.4", "versionType": "semver" }, { "status": "unaffected", "version": "5.6.2", "versionType": "semver" }, { "status": "unaffected", "version": "5.7.2", "versionType": "semver" } ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "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" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "references": [ { "url": "https://sansec.io/research/jtl-shop-ssti-rce", "tags": [ "technical-description" ] }, { "url": "https://forum.jtl-software.de/threads/jtl-shop-5-7-aktuell-5-7-2.246278/", "tags": [ "release-notes", "patch" ] }, { "url": "https://www.vulncheck.com/advisories/jtl-shop-server-side-template-injection-via-smarty-renderer", "tags": [ "third-party-advisory" ] } ], "credits": [ { "lang": "en", "value": "Sansec", "type": "finder" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "vulncheck" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-22T12:39:02.156506Z", "id": "CVE-2026-54390", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-22T12:39:39.093Z" } } ] } }