EUVD-2026-87669
GHSA-c9jj-9w3r-2hj8
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Pre-auth network SSRF (PR:N/UI:N/AV:N/AC:L) that pivots requests to backend systems (S:C) but yields only a limited GET-based oracle (C:L), with no integrity or availability impact.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
Adminer 4.16.0 through 6.0.1 contain a pre-authentication Server-Side Request Forgery (SSRF) vulnerability in the optional Elasticsearch driver (plugins/drivers/elastic.php), fixed in 6.0.2. Because adminer/include/auth.inc.php invokes Driver::connect() before the login result is validated, an unauthenticated attacker who submits crafted auth[server], auth[username], and auth[password] parameters can cause the Adminer server to issue an HTTP GET request (via get_url()/file_get_contents()) to an arbitrary reachable host and port. The driver validates only general server syntax and does not block loopback, private, link-local, or other reserved addresses; if no port is given it appends the default 9200, and Adminer's generic port check rejects ports below 1024. Selected JSON error fields from non-2xx Elasticsearch-style responses, as well as connection failures, are rendered on the login page, providing a port-scanning oracle and enabling internal network reconnaissance and service fingerprinting. Exploitation requires that the optional Elasticsearch driver be explicitly deployed (e.g., via the adminer/elastic.php template or an adminer_object() configuration; it is not loaded in a default build) and that PHP allow_url_fopen be enabled.
AnalysisAI
Server-side request forgery in Adminer's optional Elasticsearch driver (plugins/drivers/elastic.php) lets unauthenticated remote attackers force the Adminer host to issue HTTP GET requests to arbitrary reachable hosts and ports, because include/auth.inc.php calls Driver::connect() before it validates the submitted login result. Versions 4.16.0 through 6.0.1 are affected and the issue is conditional: it requires that the optional Elasticsearch driver be explicitly deployed (via the adminer/elastic.php template or an adminer_object() configuration) and that PHP allow_url_fopen be enabled so get_url()/file_get_contents() can send the outbound request. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires that the OPTIONAL Elasticsearch driver (plugins/drivers/elastic.php) be explicitly deployed via the adminer/elastic.php template or an adminer_object() configuration - it is NOT present in a default Adminer build - AND that PHP allow_url_fopen be enabled so get_url()/file_get_contents() can issue the outbound request. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine but conditional issue best rated MEDIUM, consistent with the vendor's CVSS 4.0 base score of 6.9. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Adminer 6.0.2 (vendor-released patch), which fixes the Elasticsearch driver's pre-authentication request handling; see the vendor advisory at https://github.com/vrana/adminer/security/advisories/GHSA-q8h3-4cx4-prgm. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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