Pingora HTTP/2 server memory exhaustion through unbounded default header-list and concurrent-stream limits

Pingora versions prior to 0.8.1 used the h2 crate's default HTTP/2 server limits, a 16 MiB decoded header-list size and no limit on concurrent streams, unless the application set its own. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the server...

CVE-2026-105297

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

CVE-2026-105297 Pingora HTTP/2 server memory exhaustion through unbounded default header-list and concurrent-stream limits

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

EUVD-2026-104678

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

CVE-2026-105297

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

CVE-2026-105297 Pingora HTTP/2 server memory exhaustion through unbounded default header-list and concurrent-stream limits

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

CVE-2026-105297 Pingora HTTP/2 server memory exhaustion through unbounded default header-list and concurrent-stream limits

Summary Before version 0.8.1, Pingora's HTTP/2 server used the h2 crate's default limits unless the application set its own 16 MiB decoded header-list size and no limit on concurrent streams. A remote, unauthenticated client can send 1-byte HPACK references to a near-empty header, making the serv...

CVE-2026-105297

The Pingora HTTP/2 server is vulnerable to a remote, unauthenticated denial of service (DoS) due to memory exhaustion. Before version 0.8.1 , the server used default limits that allowed a client to send 1-byte HPACK references to near-empty headers, forcing the server to allocate hundreds of thou...

RUSTSEC-2026-0258 h2 unbounded empty DATA frames

The h2 crate, used internally by hyper, had a flaw that would accept and queue empty DATA frames without limit. If streams were not actively drained, this could lead to unbounded memory usage, or a panic if the length overflows. Low severity. Patched in v0.4.16...

h2 unbounded empty DATA frames

The h2 crate, used internally by hyper, had a flaw that would accept and queue empty DATA frames without limit. If streams were not actively drained, this could lead to unbounded memory usage, or a panic if the length overflows. Low severity. Patched in v0.4.16...

Fedora: Security Advisory (FEDORA-2025-8628ba80b1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...