CVE-2026-75484

CVE-2026-75484 is a CRLF injection vulnerability in mtrudel bandit (Elixir HTTP server), versions 1.4.0 through before 1.12.5 . The root cause is in Bandit.HTTP2.Stream.read_headers/1, which validates header structure but never inspects field values . Because HPACK carries arbitrary octets, an un...

EEF-CVE-2026-75484 HTTP/2 header field values containing CR, LF or NUL are passed to the application unvalidated in Bandit

Summary Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in mtrudel bandit allows an unauthenticated remote attacker to smuggle CR, LF, or NUL characters into application-visible request headers via HTTP/2. Bandit.HTTP2.Stream.readheaders/1 validates pseudo-header placemen...

CVE-2026-75484 HTTP/2 header field values containing CR, LF or NUL are passed to the application unvalidated in Bandit

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in mtrudel bandit allows an unauthenticated remote attacker to smuggle CR, LF, or NUL characters into application-visible request headers via HTTP/2. Bandit.HTTP2.Stream.readheaders/1 validates pseudo-header placement and...

CVE-2026-75484 HTTP/2 header field values containing CR, LF or NUL are passed to the application unvalidated in Bandit

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in mtrudel bandit allows an unauthenticated remote attacker to smuggle CR, LF, or NUL characters into application-visible request headers via HTTP/2. Bandit.HTTP2.Stream.readheaders/1 validates pseudo-header placement and...

CVE-2026-75484 HTTP/2 header field values containing CR, LF or NUL are passed to the application unvalidated in Bandit

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in mtrudel bandit allows an unauthenticated remote attacker to smuggle CR, LF, or NUL characters into application-visible request headers via HTTP/2. Bandit.HTTP2.Stream.readheaders/1 validates pseudo-header placement and...

EUVD-2026-63661

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in mtrudel bandit allows an unauthenticated remote attacker to smuggle CR, LF, or NUL characters into application-visible request headers via HTTP/2. Bandit.HTTP2.Stream.readheaders/1 validates pseudo-header placement and...

CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

EUVD-2026-63660

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

EEF-CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Summary Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2...

CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

CVE-2026-74836

CVE-2026-74836 is an unbounded resource exhaustion vulnerability in mtrudel/bandit (Erlang HTTP/2 server library), affecting versions 0.3.4 through before 1.12.5 . When a stream's response body exceeds the HTTP/2 connection-level send window (default 65,535 bytes), the stream process blocks indef...

CVE-2026-74836 HTTP/2 connection-window starvation pins Plug processes indefinitely in Bandit

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...

net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame

A flaw was found in the HTTP/2 protocol implementation within the Go standard library golang.org/x/net and net/http/internal/http2. A remote attacker can exploit this vulnerability by sending a specially crafted HTTP/2 SETTINGS frame with the SETTINGSMAXFRAMESIZE parameter set to zero. This...

grpc-js: @grpc/grpc-js: Server crash via malformed HTTP/2 stream initiation

A flaw was found in @grpc/grpc-js, a pure JavaScript gRPC client and server library. An invalid incoming HTTP/2 stream initiation can cause a server process to crash. This vulnerability affects all servers created using @grpc/grpc-js, and no workaround is available. An unauthenticated remote...

USN-8654-1 netty vulnerabilities

It was discovered that Netty did not properly handle malformed HTTP/2 control frames. An attacker could use this to cause a denial of service via resource exhaustion. This issue only affects Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. CVE-2025-55163 It was discover...

USN-8654-1: Netty vulnerabilities

It was discovered that Netty did not properly handle malformed HTTP/2 control frames. An attacker could use this to cause a denial of service via resource exhaustion. This issue only affects Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. CVE-2025-55163 It was discover...

K000162994: Node.js vulnerabilities CVE-2026-21712 and CVE-2026-56846

Security Advisory Description CVE-2026-21712 A flaw in Node.js URL processing causes an assertion failure in native code when url.format is called with a malformed internationalized domain name IDN containing invalid characters, crashing the Node.js process. CVE-2026-56846 A flaw in Node.js HTTP/...

PT-2026-79147

Name of the Vulnerable Software and Affected Versions bandit versions 1.4.0 through 1.12.4 Description An improper neutralization of CRLF sequences allows an unauthenticated remote attacker to smuggle Carriage Return CR, Line Feed LF, or Null NUL characters into application-visible request header...

PT-2026-79146

Name of the Vulnerable Software and Affected Versions bandit versions 0.3.4 through 1.12.4 Description An unauthenticated remote attacker can pin an unbounded number of HTTP/2 stream processes indefinitely by exploiting connection-level flow control. When a stream response body exceeds the HTTP/2...

CVE-2026-74836: Allocation of Resources Without Limits or Throttling

Allocation of Resources Without Limits or Throttling vulnerability in mtrudel bandit allows an unauthenticated remote attacker to pin an unbounded number of HTTP/2 stream processes indefinitely via connection-level flow control. When a stream's response body outruns the HTTP/2 connection-level se...