Exploit for Incorrect Authorization in Traefik

CVE-2026-88008 — Traefik: unauthorised h2c upgrade tunnels pas...

SUSE CVE-2026-88008

Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching...

CVE-2026-88008: Inconsistent Interpretation of HTTP Requests

Traefik is an open source HTTP reverse proxy and load balancer. From 2.11.26 until 2.11.57 and 3.7.13, Traefik forwards a client-supplied Connection header requesting Upgrade, the Upgrade: h2c token, and HTTP2-Settings to a shared backend. If the backend accepts h2c and returns 101 Switching...

dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM

.NET Denial of Service Vulnerability - HTTP/2 SETTINGS/PING ACK flood causing OOM...

UBUNTU-CVE-2026-54428

Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier, 5.5-beta1 and earlier allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2...

USN-8472-1: containerd vulnerabilities

It was discovered that containerd incorrectly handled HTTP/2 SETTINGS frames. A remote attacker could possibly use this issue to cause containerd to enter an infinite loop, resulting in a denial of service. CVE-2026-33814 Jakub Ciolek and Kyle Elliott discovered that containerd incorrectly handle...

USN-8471-1 containerd vulnerabilities

It was discovered that containerd incorrectly handled HTTP/2 SETTINGS frames. A remote attacker could possibly use this issue to cause containerd to enter an infinite loop, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu...

SUSE SLES15 Security Update : azure-storage-azcopy (SUSE-SU-2026:2466-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2466-1 advisory. This update for azure-storage-azcopy fixes the following issues Update to 10.32.4: - CVE-2025-47907: database/sql: incorrect result...

dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM

.NET Denial of Service Vulnerability - HTTP/2 SETTINGS/PING ACK flood causing OOM...

Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : ADSys vulnerabilities (USN-8430-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8430-1 advisory. It was discovered that ADSys did not properly handle certain HTTP/2 frames. A remote attacker could possibly...

Amazon Linux 2 : amazon-ssm-agent, --advisory ALAS2-2026-3350 (ALAS-2026-3350)

The version of amazon-ssm-agent installed on the remote host is prior to 3.3.4515.0-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3350 advisory. When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it...

Amazon Linux 2023 : amazon-ssm-agent (ALAS2023-2026-1813)

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1813 advisory. 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. CVE-2026-33814 Tenable has extracte...

Amazon Linux 2023 : oci-add-hooks (ALAS2023-2026-1739)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1739 advisory. When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport...

Amazon Linux 2 : rclone, --advisory ALAS2-2026-3309 (ALAS-2026-3309)

The version of rclone installed on the remote host is prior to 1.55.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3309 advisory. Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag...

Amazon Linux 2 : golist, --advisory ALAS2-2026-3308 (ALAS-2026-3308)

The version of golist installed on the remote host is prior to 0.10.1-10. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3308 advisory. When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a...

Amazon Linux 2 : oci-add-hooks, --advisory ALAS2ECS-2026-118 (ALASECS-2026-118)

The version of oci-add-hooks installed on the remote host is prior to 0-0.10.20200504git325a340. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2ECS-2026-118 advisory. When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a...

Important: oci-add-hooks

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Important: oci-add-hooks

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Important: libcap

Issue Overview: Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escapi...

Important: rclone

Issue Overview: Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escapi...