{"id":"CVE-2026-62993","aliases":["GHSA-cq55-c7wv-pxmq"],"url":"https://o3.security/vulnerability/CVE-2026-62993","summary":"Smarty: SSRF via redirect bypass of trusted_uri using {fetch}","details":"Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. Prior to 4.5.7 and 5.8.2, depending on the release line, Smarty's {fetch} handling in libs/plugins/function.fetch.php and src/FunctionHandler/Fetch.php used Security::isTrustedUri() to validate only the initial remote URL against trusted_uri when a security policy was active. For resources handled by file_get_contents(), including HTTPS URLs, PHP followed HTTP redirects by default. An attacker who could supply or influence a fetch target and had an open redirect on a trusted host could redirect the request to an attacker-chosen internal endpoint, bypass the trusted_uri allowlist, and perform server-side request forgery. This issue is fixed in versions 4.5.7 and 5.8.2.","published":"2026-08-31T20:58:03.616Z","modified":"2026-09-03T03:30:25.550800690Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"smarty/smarty","fixedVersion":"5.8.2"},{"ecosystem":"Packagist","name":"smarty/smarty","fixedVersion":"4.5.7"}],"fix":{"url":"https://github.com/smarty-php/smarty/commit/31e06fc087a8b5a9b236c1e5dacc1c2850a2c115","label":"smarty-php/smarty@31e06fc"},"references":[{"type":"WEB","url":"https://github.com/smarty-php/smarty/releases/tag/v4.5.7"},{"type":"WEB","url":"https://github.com/smarty-php/smarty/releases/tag/v5.8.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62993.json"},{"type":"ADVISORY","url":"https://github.com/smarty-php/smarty/security/advisories/GHSA-cq55-c7wv-pxmq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62993"},{"type":"FIX","url":"https://github.com/smarty-php/smarty/commit/31e06fc087a8b5a9b236c1e5dacc1c2850a2c115"},{"type":"FIX","url":"https://github.com/smarty-php/smarty/commit/a1ccdb0518021a559b4066c37b76a42c86bbce90"},{"type":"FIX","url":"https://github.com/smarty-php/smarty/pull/1194"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-03T03:30:25.550800690Z"}}