CVE-2026-105298 Pingora HTTP/2 :authority and Host header mismatch enables cache poisoning and host-based access control bypass

Summary Before version 0.9.0, Pingora accepted HTTP/2 requests whose Host header differed from the :authority pseudo-header. Request filters, cache keys, and logs that read the request URI session.reqheader.uri saw the :authority value, but the upstream received the client-supplied Host value...

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 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 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

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...

CLEANSTART-2026-YT84252 HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently

CVE-2026-97032 affects multiple packages. HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. See references for individual vulnerability details...

CLEANSTART-2026-NT55483 malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW...

CVE-2026-78669 affects multiple packages. A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGSINITIALWINDOWSIZE values. See references for individual vulnerability...

CLEANSTART-2026-NF66444 HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a r...

CVE-2026-78663 affects multiple packages. The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream refunding data for any sent-but-unread portion of the stream, and again when a request handler reads the buffered data. See references f...

CLEANSTART-2026-AP92667 Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing

CVE-2026-78660 affects multiple packages. Historically, we have been rather lax about malformed framing-related headers in our HTTP/2 implementation, as they cannot interfere with HTTP/2 framing. See references for individual vulnerability details...

CLEANSTART-2026-JI85832 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0

Security vulnerability affects the gatekeeper-fips package. When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGSMAXFRAMESIZE with a value of 0...

PT-2026-117933

Summary Before version 0.9.0, Pingora accepted HTTP/2 requests whose Host header differed from the :authority pseudo-header. Request filters, cache keys, and logs that read the request URI session.req header.uri saw the :authority value, but the upstream received the client-supplied Host value...

PT-2026-132957

Security vulnerability affects the gatekeeper-fips package. When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS MAX FRAME SIZE with a value of 0...

ALSA-2026:86093 Important: golang security, bug fix, and enhancement update

The golang packages provide the Go programming language compiler. Security Fixes: net/http: golang: golang: Denial of Service via crafted HTTP Range headers CVE-2026-78667 crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references CVE-2026-97031 net/http:...

Important: go-toolset:rhel8 security, bug fix, and enhancement update

Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fixes: net/http: golang: golang: Denial of Service via crafted HTTP Range headers CVE-2026-78667 crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension...

ALSA-2026:86196 Important: golang security, bug fix, and enhancement update

The golang packages provide the Go programming language compiler. Security Fixes: net/http: golang: golang: Denial of Service via crafted HTTP Range headers CVE-2026-78667 crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references CVE-2026-97031 net/http:...

Red Hat: CVE-2026-101356: tomcat: tomcat: Information disclosure via incorrect object recycling in HTTP/2 processing

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through...

PT-2026-118374

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.22 through 11.0.26 Apache Tomcat versions 10.1.55 through 10.1.60 Apache Tomcat versions 9.0.118 through 9.0.122 Description Incorrect object recycling and re-use during HTTP/2 processing of asynchronous servlets ca...

PT-2026-125048

Pingora versions prior to 0.9.0 accepted HTTP/2 requests whose Host header differed from the :authority pseudo-header. Request filters, cache keys, and logs that read the request URI session.req header.uri saw the :authority value, but the upstream received the client-supplied Host value. Pingora...