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Attackers can exploit the unsandboxed Twig environment in TwigView::render(), which lacks SandboxExtension or a SecurityPolicy, to inject malicious expressions such as filter('system') into mail template bodies stored unsanitized in the database, causing automatic payload execution on each subsequent application event that triggers a mail dispatch.","publishedAt":"2026-07-24T15:33:35.973Z","updatedAt":"2026-07-28T01:06:10.301Z","severity":{"score":8.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["microweber microweber"],"affected":[{"vendor":"microweber","product":"microweber","packageURL":"pkg:github/microweber/microweber","defaultStatus":"affected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.0.20","versionType":"semver"}],"repo":"https://github.com/microweber/microweber"}],"references":["https://gist.github.com/W40X/584f4b088d310bc5280cc74bbf97831a","https://www.vulncheck.com/advisories/microweber-cms-server-side-template-injection-via-mail-templates"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/65xxx/CVE-2026-65693.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-65693","state":"PUBLISHED","datePublished":"2026-07-24T15:33:35.973Z","dateUpdated":"2026-07-28T01:06:10.301Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-07-22T20:26:09.979Z"},"containers":{"cna":{"title":"Microweber CMS 2.0.20 Server-Side Template Injection via Mail Templates","descriptions":[{"lang":"en","value":"Microweber CMS through 2.0.20 contains a server-side template injection vulnerability that allows authenticated administrators to achieve arbitrary OS command execution by injecting Twig expressions into mail templates. 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