When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols sent by the client) which is not escaped.
Weakness
The product writes sensitive information to a log file.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Go | Golang | * | 1.24.8 (excluding) |
| Go | Golang | 1.25.0 (including) | 1.25.2 (excluding) |
| Golang-1.23 | Ubuntu | plucky | * |
| Golang-1.24 | Ubuntu | plucky | * |