{"id":"CVE-2026-25892","summary":"Adminer has an Unauthenticated Persistent DoS via Array Injection in ?script=version Endpoint","details":"Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.","aliases":["GHSA-q4f2-39gr-45jh"],"modified":"2026-08-12T03:51:10.787926380Z","published":"2026-02-09T21:26:45.224Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-20"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25892.json"},"references":[{"type":"WEB","url":"https://github.com/vrana/adminer/releases/tag/v5.4.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25892.json"},{"type":"ADVISORY","url":"https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25892"},{"type":"FIX","url":"https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/vrana/adminer","events":[{"introduced":"7cb3e768bbd34f4b01aa9a2b7fac1c7224a02b37"},{"fixed":"39b339b1b551d2cc100893047fac2498a83d8407"},{"fixed":"21d3a3150388677b18647d68aec93b7850e457d3"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:adminer:adminer:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"4.6.2"},{"fixed":"5.4.2"}]}}],"versions":["v5.4.1","v5.4.0","v5.3.0","v5.2.1","v5.2.0","v5.1.1","v5.1.0","v5.0.6","v5.0.5","v5.0.4","v5.0.3","v5.0.2","v5.0.1","v5.0.0","v4.17.1","v4.17.0","v4.16.0","v4.8.1","v4.8.0","v4.7.9","v4.7.8","v4.7.7","v4.7.5","v4.7.4","v4.7.3","v4.7.2","v4.7.1","v4.7.0","v4.6.3","v4.6.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25892.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}