{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-56705/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":9.8,"id":"CVE-2026-56705"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Adminer","Adminer (\u003c 5.4.3)"],"_cs_severities":["critical"],"_cs_tags":["web-vulnerability","rce","cve-2026-56705","vulnerability","web-application","cve-2026-34968"],"_cs_type":"advisory","_cs_vendors":["Vrana"],"content_html":"\u003cp\u003eAdminer versions prior to 5.4.3 contain a critical vulnerability (CVE-2026-56705) due to the failure to properly sanitize the server field during the construction of a PHP Data Objects (PDO) Data Source Name (DSN) string. This flaw enables unauthenticated remote attackers to perform DSN injection by providing malicious input containing semicolons. By injecting specific ODBC parameters, such as 'TraceFile' and 'TraceOn', an attacker can force the application to write arbitrary content to a file on the server. If this file is placed within the web root, the attacker can execute the written PHP code, leading to full system compromise. This vulnerability represents a high-risk vector for organizations running instances of Adminer exposed to the internet.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a target running a vulnerable version of Adminer (prior to 5.4.3) via banner grabbing or service discovery.\u003c/li\u003e\n\u003cli\u003eAttacker interacts with the Adminer login interface, targeting the server field input.\u003c/li\u003e\n\u003cli\u003eAttacker submits a crafted request containing a semicolon-delimited DSN string designed to inject ODBC configuration parameters.\u003c/li\u003e\n\u003cli\u003eThe vulnerable PHP code processes the input and initializes a PDO connection using the malicious DSN string.\u003c/li\u003e\n\u003cli\u003eThe underlying database driver (specifically MS SQL PDO) processes the injected 'TraceFile' and 'TraceOn' parameters.\u003c/li\u003e\n\u003cli\u003eThe application writes the trace output, which includes the injected PHP payload, to a file in the web root.\u003c/li\u003e\n\u003cli\u003eThe attacker sends an HTTP request to the newly created file, triggering the web server to execute the injected PHP code.\u003c/li\u003e\n\u003cli\u003eSuccessful execution of the payload provides the attacker with remote code execution (RCE) on the server.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows unauthenticated attackers to achieve arbitrary remote code execution on the server hosting Adminer. This can lead to total system compromise, data exfiltration, lateral movement within the network, and the deployment of persistent malware or backdoors. Organizations across any sector using Adminer to manage database instances are susceptible to this risk if they are running version 5.4.3 or earlier.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpdate Adminer to version 5.4.3 or later immediately to mitigate CVE-2026-56705.\u003c/li\u003e\n\u003cli\u003eInspect web server logs for requests containing semicolons or common ODBC parameters like 'TraceFile' directed at the Adminer login endpoint.\u003c/li\u003e\n\u003cli\u003eImplement access controls or network segmentation to restrict access to the Adminer interface to authorized personnel only.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule below to monitor for exploitation attempts against the Adminer service.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-08-25T04:06:00Z","date_published":"2026-08-25T04:05:07Z","id":"https://feed.craftedsignal.io/briefs/2026-08-adminer-rce/","summary":"Adminer versions prior to 5.4.3 are vulnerable to unauthenticated remote code execution via DSN injection, allowing attackers to write arbitrary PHP files to the web root.","title":"Remote Code Execution in Adminer via PDO DSN Injection","url":"https://feed.craftedsignal.io/briefs/2026-08-adminer-rce/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-56705","version":"https://jsonfeed.org/version/1.1"}