H2O Vulnerable to Denial of Service (DoS) via `/3/ImportFiles` Endpoint

A vulnerability in the /3/ImportFiles endpoint of h2oai/h2o-3 version 3.46.1 allows an attacker to cause a denial of service. The endpoint takes a single GET parameter, path, which can be recursively set to reference itself. This leads the server to repeatedly call its own endpoint, eventually...

H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controll...

H2O 代码问题漏洞

H2O is an in-memory platform for distributed, scalable machine learning open-sourced by H2O.ai. A code issue vulnerability exists in H2O version 3.46.0.4, which stems from deserializing untrusted data and could lead to remote code execution...

H2O Vulnerable to Arbitrary File Overwrite via File Export

In h2oai/h2o-3 version 3.46.0, the endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This vulnerability can be exploited to overwrite any file on the target server with a...

H2O Deserialization of Untrusted Data Vulnerability

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are...

H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling...

PT-2025-12048

Name of the Vulnerable Software and Affected Versions h2oai/h2o-3 version 3.46.0.1 Description The run tool command exposes classes in the water.tools package through the ast parser. This includes the XGBoostLibExtractTool class, which can be exploited to shut down the server and write large file...

PT-2025-12216

Name of the Vulnerable Software and Affected Versions h2oai/h2o-3 version 3.46.0 Description A denial of service issue exists due to a vulnerability in the typeahead endpoint. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attack...

H2O 安全漏洞

H2O is an in-memory platform for distributed, scalable machine learning open-sourced by H2O.ai. A security vulnerability exists in H2O version 3.46.0, which stems from a custom encryption tool endpoint that does not restrict encrypted files, potentially leading to ransomware behavior...

PT-2025-12171

Name of the Vulnerable Software and Affected Versions h2oai/h2o-3 version 3.46.0 Description The endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This issue can be...

H2O Vulnerable to Denial of Service (DoS) and File Write

In h2oai/h2o-3 version 3.46.0.1, the runtool command exposes classes in the water.tools package through the ast parser. This includes the XGBoostLibExtractTool class, which can be exploited to shut down the server and write large files to arbitrary directories, leading to a denial of service...

H2O 资源管理错误漏洞

H2O is an in-memory platform for distributed, scalable machine learning open-sourced by H2O.ai. A resource management error vulnerability exists in H2O version 3.46.1, which stems from mishandling of the /3/ImportFiles endpoint and could lead to a denial of service...

H2O Vulnerable to Execution of Arbitrary Files

In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacke...

H2O Vulnerable to Arbitrary File Overwrite

In h2oai/h2o-3 version 3.46.0, the /99/Models/name/json endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the exportModelDetails function in ModelsHandler.java, where the user-controllable mexport.dir parameter is used to specify the file path for...

H2O Vulnerable to Denial of Service (DoS) via `/3/Parse` Endpoint

A vulnerability in the /3/Parse endpoint of h2oai/h2o-3 version 3.46.0.1 allows for a denial of service DoS attack. The endpoint uses a user-specified string to construct a regular expression, which is then applied to another user-specified string. By sending multiple simultaneous requests, an...

CVE-2024-5979

In h2oai/h2o-3 version 3.46.0, the runtool command in the rapids component allows the main function of any class under the water.tools namespace to be called. One such class, MojoConvertTool, crashes the server when invoked with an invalid argument, causing a denial of service...

CVE-2024-6960

The H2O machine learning platform uses "Iced" classes as the primary means of moving Java Objects around the cluster. The Iced format supports inclusion of serialized Java objects. When a model is deserialized, any class is allowed to be deserialized no class whitelist. An attacker can construct ...

CVE-2024-8862

A vulnerability, which was classified as critical, has been found in h2oai h2o-3 3.46.0.4. This issue affects the function getConnectionSafe of the file /dtale/chart-data/1 of the component JDBC Connection Handler. The manipulation of the argument query leads to deserialization. The attack may be...

H2O-3 Arbitrary File Overwrite (CVE-2024-6854)

An arbitrary file overwrite vulnerability exists in H2O-3. The endpoint that allows for exporting models & does not limit where models can be exported to. As such an attacker can export a model to any file in the server file structure, overwriting it, by simply using the force flag. Note that...

H2O-3 Multiple Deserialization Vulnerabilities

H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to deserialization attacks, file reads, and command execution. Exploitation can occur when an attacker has access to post to the ImportSQLTable URI with a JSON document containing a connectionurl property with a...