🚨 HIGH - QUIC stream reassembly memory exhaustion in Quinn Assembler (CVE-2026-25800) Quinn (Rust IETF QUIC) is vulnerable to memory exhaustion in its Assembler component when processing many non-contiguous RecvStream fragments with gaps. The root cause is inefficient buffering/defragmentation logic leading to unbounded memory growth (resource exhaustion/algorithmic complexity). A remote peer can exploit this over the network by sending highly fragmented stream data with gaps that ordered readers can’t reassemble efficiently, requiring no local privileges beyond being able to establish a QUIC connection. Successful exploitation can trigger excessive memory consumption and service instability, resulting in denial of service and potential process termination under memory pressure. 👉 Affected: quinn >=0.1.0, <0.11.15 | Upgrade to 0.11.15
Post summary
The post announces a memory exhaustion vulnerability in the Quinn QUIC implementation, specifies vulnerability details, and recommends upgrading to 0.11.15 to patch the issue.