GHSA-xvr7-p2c6-j83w: 
Swift vulnerability analysis and mitigation

The HTTP/2 MadeYouReset vulnerability (GHSA-xvr7-p2c6-j83w) affects swift-nio-http2 versions prior to 1.38.0. This vulnerability was disclosed and published on August 13, 2025, and received a moderate severity rating with a CVSS score of 6.3. The vulnerability primarily concerns potential denial-of-service attacks through resource consumption patterns (GitHub Advisory).

The vulnerability is classified under CWE-405 (Asymmetric Resource Consumption), where an adversary could potentially cause the system to consume excessive resources without requiring equivalent work or authorization. The CVSS v4 metrics indicate a network-based attack vector with low complexity, requiring no privileges or user interaction. The vulnerability primarily affects availability, with no direct impact on confidentiality or integrity (GitHub Advisory).

The impact of this vulnerability is primarily focused on system availability, with no direct effect on confidentiality or integrity. The vulnerability allows for potential resource drain attacks, particularly when attackers interleave attack traffic with legitimate traffic to evade existing DoS prevention mechanisms (GitHub Advisory).

The vulnerability has been patched in version 1.38.0 of swift-nio-http2, which includes defense-in-depth measures to detect suspicious client behavior. These measures specifically address resource drain attacks where attackers attempt to bypass existing DoS prevention mechanisms. It is recommended that all users upgrade to version 1.38.0 to protect against potential sophisticated attacks (GitHub Advisory).