adminer: Adminer is an open-source database management in a single PHP file
CVE-2021-21311 is fixed in adminer on 1 platform, first by adminer 4.6.2-1ubuntu0.1~esm1, released May 19, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on September 29, 2025. Patch Radar priority: Patch now.
Adminer is an open-source database management in a single PHP file. In adminer from version 4.0.0 and before 4.7.9 there is a server-side request forgery vulnerability. Users of Adminer versions bundling all drivers (e.g. `adminer.php`) are affected. This is fixed in version 4.7.9.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| adminer · Ubuntu 18.04.6 LTS (bionic) | 4.6.2-1ubuntu0.1~esm1 | adminer 4.6.2-1ubuntu0.1~esm1 | May 19, 2021 |
| adminer · Ubuntu 20.04 LTS (focal) | 4.7.6-1ubuntu0.1~esm1 | adminer 4.7.6-1ubuntu0.1~esm1 | May 19, 2021 |
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