{"id":"CVE-2026-56704","title":"Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation","summary":"Adminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted version strings that break out of th…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-79"],"published":"2026-08-25","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:23:49.880","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-56704","references":[{"url":"https://github.com/vrana/adminer/security/advisories/GHSA-h6jr-7pr6-grgj","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/adminer-before-cross-site-scripting-via-mysql-version-string","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.00241,"epssPercentile":0.15573,"ingestedAt":"2026-09-08T21:11:12.285Z","slug":"CVE-2026-56704","body":"## Overview\n\nAdminer before 5.4.3 inserts unsanitized database server version strings into script tags with valid CSP nonces without proper validation. Attackers controlling a rogue MySQL server can return crafted version strings that break out of the JavaScript context and execute arbitrary code, bypassing Content Security Policy protections.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}