{"id":"CVE-2026-92591","title":"Craft CMS 5.0.0 through 5.10.12 treats a database connection failure as meaning that Craft is not installed, which makes anonymous installer actions — including install/validate-site — reachable on an installed production site whenever P…","summary":"Craft CMS 5.0.0 through 5.10.12 treats a database connection failure as meaning that Craft is not installed, which makes anonymous installer actions — including install/validate-site — reachable on an installed production site whenever P…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-636"],"vendor":"craftcms","product":"cms","affected":["cms >= 5.0.0 < 5.10.13"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T14:17:54.787","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92591","references":[{"url":"https://github.com/craftcms/cms/security/advisories/GHSA-hfjh-gw6x-7pv5","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/craft-cms-5.0.0-before-5.10.13-environment-secret-exposure-via-installer","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-17T13:24:05.702594Z"},"ingestedAt":"2026-09-16T22:06:50.930Z","epss":0.0024,"epssPercentile":0.15335,"slug":"CVE-2026-92591","body":"## Overview\n\nCraft CMS 5.0.0 through 5.10.12 treats a database connection failure as meaning that Craft is not installed, which makes anonymous installer actions — including install/validate-site — reachable on an installed production site whenever PHP remains available but the configured MySQL endpoint does not. The action accepts a site name, serializes it through Site::getName(), and expands ${NAME} expressions using App::env(). An unauthenticated attacker who obtained a guest session cookie and matching CSRF token before the outage and whose session remains valid during it can submit a predictable variable name (for example Craft's conventional CRAFT_SECURITY_KEY) and receive its value, disclosing Craft secrets, process environment variables, $_SERVER entries, or PHP constants such as the security key, database credentials, or API keys. The issue requires an independently occurring database outage; the vulnerability itself provides no way to induce it. Fixed in 5.10.13.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}