---
title: "CVE-2026-100697\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-100697?format=md
keywords: index, follow
---

# CVE-2026-100697

Publication date 29 September 2026

Last updated 29 September 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.6 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-100697?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| adminer | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:

CVSS v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-100697?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-100697?format=md)

**Base score**

5.3 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | None |
  | User interaction | Passive |
  | Vulnerable system - Confidentiality impact | None |
  | Vulnerable system - Integrity impact | Low |
  | Vulnerable system - Availability impact | None |
  | Subsequent system - Confidentiality impact | Low |
  | Subsequent system - Integrity impact | Low |
  | Subsequent system - Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.3 · Medium |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-100697)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-100697)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-100697)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-100697)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-100697>
* <https://github.com/vrana/adminer/security/advisories/GHSA-77qq-q8fv-x45v>
* <https://www.vulncheck.com/advisories/adminer-6.0.0-server-side-request-forgery-via-clickhouse-driver>