CVE-2026-100697 Adminer 6.0.0 Server-Side Request Forgery via ClickHouse driver
Unauthenticated attackers can exploit the ClickHouse driver to perform SSRF, accessing internal services and leaking sensitive response data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-100697?
CVE-2026-100697 is a medium-severity server-side request forgery vulnerability in vrana adminer, published on 26 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-100697?
How do I fix CVE-2026-100697?
Upgrade to a fixed version.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-100697 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100697 exists.
Sources
Also known as DEBIAN-CVE-2026-100697, GHSA-77qq-q8fv-x45v, GHSA-9w28-5vwj-mq45, UBUNTU-CVE-2026-100697.