RUSTSEC-2026-0185: Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly

> Remote memory exhaustion in quinn-proto from unbounded out-of-order stream reassembly

| Details | |
| ------------------- | ---------------------------------------------- |
| Package | `quinn-proto` |
| Version | `0.11.14` |
| URL | [https://github.com/quinn-rs/quinn/pull/2694](https://github.com/quinn-rs/quinn/pull/2694) |
| Date | 2026-06-22 |
| Patched versions | `>=0.11.15` |

The `Assembler` component that assembles unordered stream fragments into consecutive chunks of the
stream incurs some overhead for non-contiguous fragments. Readers that read from a RecvStream in
order (through an `AsyncRead` impl for example) will be sensitive to peers that send fragments
while leaving out early parts of the stream, and in particular, fragments with many gaps (because
these cannot be defragmented). In such a scenario, the receiving connection suffers from high
buffer overhead, enabling memory exhaustion.

See [advisory page](https://rustsec.org/advisories/RUSTSEC-2026-0185.html) for additional details.

Search the repository for the quinn-proto 0.11.14 dependency and review the advisory details linked in the issue. Update the dependency to version 0.11.15 or newer, then run the relevant Rust checks or tests; done means the vulnerable version is no longer resolved.

Written by the indexing model from the issue text.