CVE-2023-28468

An issue was discovered in FvbServicesRuntimeDxe in Insyde InsydeH2O with kernel 5.0 through 5.5. The FvbServicesRuntimeDxe SMM module exposes an SMI handler that allows an attacker to interact with the SPI flash at run-time from the OS...

CVE-2023-41337

h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. In version 2.3.0-beta2 and prior, when h2o is configured to listen to multiple addresses or ports with each of them using different backend servers managed by multiple entities, a malicious backend entity that also has the...

CVE-2023-6016

An attacker is able to gain remote code execution on a server hosting the H2O dashboard through it's POJO model import feature...

CVE-2023-6013

H2O is vulnerable to stored XSS vulnerability which can lead to a Local File Include attack...

CVE-2023-39281

A stack buffer overflow vulnerability discovered in AsfSecureBootDxe in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to run arbitrary code execution during the DXE phase...

CVE-2023-22615

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. IHISI subfunction execution may corrupt SMRAM. An attacker can pass an address in the RCX save state register that overlaps SMRAM, thereby coercing an IHISI subfunction handler to overwrite private SMRAM...

CVE-2023-30847

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP...

CVE-2023-6038

A Local File Inclusion LFI vulnerability exists in the h2o-3 REST API, allowing unauthenticated remote attackers to read arbitrary files on the server with the permissions of the user running the h2o-3 instance. This issue affects the default installation and does not require user interaction. Th...

CVE-2023-6569

External Control of File Name or Path in h2oai/h2o-3...

CVE-2022-24350

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. IHISI function 0x17 verifies that the output buffer lies within the command buffer but does not verify that output data does not go beyond the end of the command buffer. In particular, the GetFlashTable function ...

CVE-2022-32954

An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 5.5. DMA attacks on the SdMmcDevice buffer used by SMM and non-SMM code could cause TOCTOU race-condition issues that could lead to corruption of SMRAM and escalation of privileges. This attack can be mitigated by using IOMMU...

CVE-2021-43848

h2o is an open source http server. In code prior to the 8c0eca3 commit h2o may attempt to access uninitialized memory. When receiving QUIC frames in certain order, HTTP/3 server-side implementation of h2o can be misguided to treat uninitialized memory as HTTP/3 frames that have been received. Whe...

CVE-2021-33625

An issue was discovered in Kernel 5.x in Insyde InsydeH2O, affecting HddPassword. Software SMI services that use the Communicate function of the EFISMMCOMMUNICATIONPROTOCOL do not check whether the address of the buffer is valid, which allows use of SMRAM, MMIO, or OS kernel addresses...

CVE-2020-5955

An issue was discovered in Int15MicrocodeSmm in Insyde InsydeH2O before 2021-10-14 on Intel client chipsets. A caller may be able to escalate privileges...

CVE-2020-27339

In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not correctly validate the CommBuffer and CommBufferSize parameters, allowing callers to corrupt either the firmware or the OS memory. The fixed versions for this issue in the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and...

CVE-2025-0782

A vulnerability in the S3 bucket configuration for h2oai/h2o-3 allows public write access to the 'h2o-release' bucket. This issue affects all versions and could enable an attacker to overwrite any file in the bucket. As users download binary files such as JARs from this bucket, this vulnerability...

编号撤回

H2O is an in-memory platform for distributed, scalable machine learning open-sourced by H2O.ai. This CVE number has been withdrawn...

Ubuntu: Security Advisory (USN-7469-4)

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...

USN-7469-4: H2O vulnerability

USN-7469-1 fixed a vulnerability in Apache Traffic Server. This update provides the corresponding updates for H2O. Original advisory details: It was discovered that Apache Traffic Server exhibited poor server resource management in its HTTP/2 protocol. An attacker could possibly use this issue to...

DEBIAN-CVE-2025-30194

When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access double-free and crash of DNSdist, causing a denial of service. The remedy is: upgrade to the patched 1.9.9 version. A...