Description
Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server parameter to bypass the privileged-port restriction and establish TCP connections to arbitrary internal hosts and ports before authentication.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vrana | adminer | < 5.5.0 | 5.5.0 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | adminer | 6.0.0-1 | — |
| Debian 13 | adminer | No fix yet | — |
| Debian 12 | adminer | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | adminer | No fix yet | — |
| Ubuntu 24.04 LTS | adminer | No fix yet | — |
| Ubuntu 22.04 LTS | adminer | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | adminer | No fix yet | — |
| Ubuntu Pro 18.04 LTS | adminer | No fix yet | — |
| Ubuntu Pro 16.04 LTS | adminer | No fix yet | — |
References
- GitHub Security Advisory (GHSA-58cq-mgw2-38m5) vendor-advisory
- VulnCheck Advisory: Adminer before 5.5.0 SSRF via PDO DSN Injection third-party-advisory