Rack::Request accepts invalid Host characters, enabling host allowlist bypass

Summary Rack::Request parses the Host header using an AUTHORITY regular expression that accepts characters not permitted in RFC-compliant hostnames, including /, ?, , and @. Because req.host returns the full parsed value, applications that validate hosts using naive prefix or suffix checks can be...

CVE-2026-24005

Kruise provides automated management of large-scale applications on Kubernetes. Prior to versions 1.8.3 and 1.7.5, PodProbeMarker allows defining custom probes with TCPSocket or HTTPGet handlers. The webhook validation does not restrict the Host field in these probe configurations. Since...

UBUNTU-CVE-2021-46977

In the Linux kernel, the following vulnerability has been resolved: KVM: VMX: Disable preemption when probing user return MSRs Disable preemption when probing a user return MSR via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrupt the host's value if KVM is...

OESA-2023-1502 golang security update

The Go Programming Language. Security Fixes: The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host o...

DEBIAN-CVE-2023-29406

The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value...

SUSE CVE-2015-2296

The resolveredirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect...

PT-2024-11086 · Linux · Linux Kernel

Name of the Vulnerable Software and Affected Versions: Linux kernel affected versions not specified Description: The issue is related to KVM: VMX, where preemption is disabled when probing user return MSRs via RDSMR/WRMSR. If the MSR holds a different value per logical CPU, the WRMSR could corrup...

GHSA-RJVJ-673Q-4HFW Command Injection in traceroute

All versions of traceroute are vulnerable to Command Injection. The package fails to sanitize input and passes it directly to an exec call, which may allow attackers to execute arbitrary code in the system. The trace function is vulnerable and can be abused if the host value is controlled by an...

CVE-2015-7263

The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value...

CVE-2015-7263

The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value...

Session fixation

The resolveredirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect...