Vulnerability · Published Sep 26, 2026 · Assigned by VulnCheck
CVE-2026-100697Adminer 6.0.0 Server-Side Request Forgery via ClickHouse driver
High 8.6
In plain English
A high-severity server-side request forgery in adminer from vrana. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Adminer 6.0.0 through 6.0.1, when the official ClickHouse driver plugin (plugins/drivers/clickhouse.php, rewritten in 6.0.0) is loaded, is vulnerable to pre-authentication server-side request forgery. An unauthenticated attacker can submit auth[driver]=clickhouse with auth[server] set to an arbitrary URL (for example http://127.0.0.1:18089), causing the Adminer server to issue an HTTP POST containing 'SELECT version()' to that host. In rootQuery(), if the target returns a status outside 200-299 (other than 401/403), the raw HTTP response body is assigned to the connection error and rendered on the login page, so the attacker receives the full response body of the internal service. This enables internal network/port reconnaissance and disclosure of sensitive information contained in internal error pages (stack traces, internal hostnames, file paths, configuration identifiers). Fixed in Adminer 6.0.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | adminer | no fix listed | DEBIAN-CVE-2026-100697 |
| Debian:13 | adminer | no fix listed | DEBIAN-CVE-2026-100697 |
| Debian:14 | adminer | 6.0.2-1 | DEBIAN-CVE-2026-100697 |
| Ubuntu:22.04:LTS | adminer | no fix listed | UBUNTU-CVE-2026-100697 |
| Ubuntu:24.04:LTS | adminer | no fix listed | UBUNTU-CVE-2026-100697 |
| Ubuntu:26.04:LTS | adminer | no fix listed | UBUNTU-CVE-2026-100697 |
| Ubuntu:26.10 | adminer | no fix listed | UBUNTU-CVE-2026-100697 |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
References
- GitHub Security Advisory (GHSA-77qq-q8fv-x45v) vendor-advisory
- VulnCheck Advisory: Adminer 6.0.0 Server-Side Request Forgery via ClickHouse driver third-party-advisory