Description
Adminer before 5.4.3 contains a cookie injection vulnerability that allows attackers to manipulate cookie attributes by injecting arbitrary values through the unsanitized X-Forwarded-Prefix HTTP header used in Set-Cookie path attributes. Attackers can exploit a misconfigured reverse proxy to downgrade SameSite protection and enable cross-origin authenticated requests, bypassing cookie security controls.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vrana | adminer | < 5.4.3 | 5.4.3 |
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 | 5.4.3+dfsg-1 | — |
| Debian 13 | adminer | No fix yet | — |
| Debian 12 | adminer | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | adminer | No fix yet | — |
| 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
- Researcher Disclosure technical-description exploit issue-tracking
- GitHub Security Advisory (GHSA-c533-9qwm-8w5h) vendor-advisory
- Release Notes release-notes
- https://www.vulncheck.com/advisories/adminer-cookie-injection-via-x-forwarded-prefix-header third-party-advisory