high8.6
CVE-2025-43960
Adminer PHP Object Injection issue leads to Denial of Service
Impact
Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | vrana/adminer | <= 4.8.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Adminer | Adminer | Version 4.8.1 |