CVE-2026-44909

Proxygen lacked a generalized slow-consumer detection mechanism in its core HTTP session layer. A remote, unauthenticated attacker could exploit HTTP/2 flow-control by setting SETTINGSINITIALWINDOWSIZE to 0 or withholding WINDOWUPDATE frames, causing the server to buffer complete response bodies ...

EUVD-2026-48310

Proxygen lacked a generalized slow-consumer detection mechanism in its core HTTP session layer. A remote, unauthenticated attacker could exploit HTTP/2 flow-control by setting SETTINGSINITIALWINDOWSIZE to 0 or withholding WINDOWUPDATE frames, causing the server to buffer complete response bodies ...

Linux Distros Unpatched Vulnerability : CVE-2026-59173

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 throu...

Denial-of-service vulnerability in HTTP/2 servers via stalled flow-control conditions

Overview A denial-of-service DoS vulnerability exists in some HTTP/2 server implementations that fail to adequately limit resource consumption when buffering response data under stalled flow-control conditions. A remote, unauthenticated attacker can trigger memory exhaustion and service...

Apache HTTP Server: DoS in HTTP/2 with initial windows size 0

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CVE-2023-43622 Apache HTTP Server: DoS in HTTP/2 with initial windows size 0

An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in...