{"id":"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.","aliases":["GHSA-cq55-c7wv-pxmq"],"modified":"2026-09-04T03:30:45.835621936Z","published":"2026-08-31T20:58:03.616Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62993.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/smarty-php/smarty","events":[{"introduced":"e161babbd49840de2ae7a5e358e59f52d66c1f0a"},{"introduced":"0"},{"fixed":"06594a114931ab6fea76b12f0207c5903cf01f8c"},{"fixed":"838d6ad1c635f8a6bafc08d791b8af18d8304b3a"},{"fixed":"31e06fc087a8b5a9b236c1e5dacc1c2850a2c115"},{"fixed":"a1ccdb0518021a559b4066c37b76a42c86bbce90"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"5.0.0"},{"fixed":"5.8.2"},{"introduced":"0"},{"fixed":"4.5.7"}]}}],"versions":["v5.8.1","v4.5.6","v5.8.0","v5.7.0","v5.6.0","v5.5.2","v5.5.1","v5.5.0","v5.4.5","v5.4.4","v4.5.5","v5.4.3","v5.4.2","v5.4.1","v4.5.4","v5.4.0","v4.5.3","v5.3.1","v5.3.0","v5.2.0","v5.1.0","v4.5.2","v4.5.1","v5.0.0","v4.5.0","v4.4.1","v4.4.0","checkout","v4.3.5","v4.3.4","v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.2.1","v4.2.0","v4.1.1","v4.1.0","v4.0.4","v4.0.3","v4.0.2","v4.0.1","v4.0.0","v3.1.40","v4.0.0-rc.0","v3.1.39","v3.1.38","v3.1.37.1","v3.1.37","v3.1.36","v3.1.35","v3.1.34","v3.1.33","v3.1.32","v3.1.31","v3.1.30","v3.1.29","v3.1.28","v2.6.28","v3.1.27","v3.1.26","v3.1.25","v3.1.24","v3.1.23","v3.1.21","v3.1.20","v3.1.19","v3.1.18","v3.1.17","v3.1.16","v3.1.15","v3.1.14","v3.1.13","v3.1.12","v3.1.11","v2.6.27","v2.6.26","v2.6.25","v2.6.24"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62993.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N"}]}