Handler on Duty: Johannes Ullrich
Threat Level: green
| Published | 2026-07-24 23:16:52 |
|---|---|
| Last Modified | 2026-07-24 23:16:52 |
| AKA | CVE-2026-66339 |
| Summary | A flaw was found in libsoup. After a CONNECT tunnel is established through an HTTP proxy, libsoup incorrectly attaches the Proxy-Authorization header to subsequent HTTPS requests sent through that tunnel to the destination server. This allows the destination server to capture proxy credentials, leading to information disclosure. |
| Access Vector | Local | Adjacent | Network |
|---|---|---|---|
| Access Complexity | Low | Medium | High |
| Authentication | None | Single | Multiple |
| Confidentiality | None | Partial | Complete |
| Integrity | None | Partial | Complete |
| Availability | None | Partial | Complete |