CVE-2026-54900

A flaw was found in Oj, a Ruby gem for JSON parsing. When processing a specially crafted JSON object key of a specific length 65,535 bytes in usual mode with createid enabled, an integer truncation vulnerability occurs. This leads to a negative size being passed to the memcpy function, causing he...

CVE-2026-54592

A flaw was found in Oj, a Ruby gem for JSON parsing. A remote attacker can exploit this vulnerability by providing a deeply nested JSON document. This can lead to a stack buffer overflow in the Oj::Doceachchild function, causing the process to abort and resulting in a denial of service DoS for th...

CVE-2026-54903

A flaw was found in Oj, an Optimized JSON JavaScript Object Notation parser for Ruby. This vulnerability allows a remote attacker to cause heap corruption and a denial of service DoS by providing a JSON string larger than 2 gigabytes GB. An integer overflow occurs when processing the string lengt...

CVE-2026-54897

A flaw was found in Oj Optimized JSON, a Ruby gem for parsing JSON. This vulnerability, categorized as a heap use-after-free CWE-416, occurs in the Oj::Doc iterators, specifically eachvalue, eachchild, and eachleaf. An attacker could exploit this when a Ruby code block, executed during iteration,...

CVE-2026-54896

A flaw was found in Oj Optimized JSON, a Ruby gem used for processing JSON data. This vulnerability occurs when the software attempts to serialize convert into a format for storage or transmission Exception objects with a very large indentation setting. The internal process for handling this...

PYSEC-2026-827 jwcrypto token substitution can lead to authentication bypass

The JWT code can auto-detect the type of token being provided, and this can lead the application to incorrect conclusions about the trustworthiness of the token. Quoting the private disclosure we received : "Under certain circumstances, it is possible to substitute a .. signed JWS with a JWE that...

CVE-2026-48828

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

CVE-2026-54899

A flaw was found in Oj Optimized JSON, a Ruby gem for parsing JSON. When a Oj::Parser instance is reused and its symbolkeys setting is toggled from true to false, a heap use-after-free vulnerability occurs. This happens because the internal key cache is freed but its pointer is not cleared,...

CVE-2026-48828

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

EUVD-2026-42028

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

CVE-2026-48828

The Bulk Variables API in Apache Airflow fails to pass the variable's key to the redactor for JSON-decodable values. This causes the should_hide_value_for_key check to fail for keys ending in suffixes like *_password, *_token, or *_secret. Consequently, an authenticated user with bulk Variable re...

CVE-2026-48828 Apache Airflow: Bulk JSON Variables bypass should_hide_value_for_key - redact() called without the key

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

CVE-2026-48828

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based "shouldhidevalueforkey" check which triggers on secret-suffixed key names like "password" / "token" / "secret" could not fire for JSON-decodable variable values. An authenticated UI/A...

CVE-2026-48828 Apache Airflow: Bulk JSON Variables bypass should_hide_value_for_key - redact() called without the key

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

CVE-2026-48828 Apache Airflow: Bulk JSON Variables bypass should_hide_value_for_key - redact() called without the key

The Bulk Variables API in Apache Airflow called the redactor without passing the variable's key, so the key-based shouldhidevalueforkey check which triggers on secret-suffixed key names like password / token / secret could not fire for JSON-decodable variable values. An authenticated UI/API user...

PT-2026-56237

Name of the Vulnerable Software and Affected Versions Chevereto versions 3.7.5 through 4.5.3 Description An issue exists in the self-hosted media-sharing platform where the /json AJAX listing endpoint fails to enforce private profile restrictions. While the profile HTML route /username correctly...

Unbounded JSON-RPC request body causes uncontrolled memory allocation in StreamableHTTPTransport

Summary An unauthenticated remote attacker can force any MCP Ruby SDK server using MCP::Server::Transports::StreamableHTTPTransport to allocate gigabytes of memory by sending a single oversized JSON-RPC POST. The transport reads the entire HTTP body into a Ruby String and parses it with...

Streamable HTTP transport lacks DNS-rebinding (Host/Origin) protection

Summary MCP::Server::Transports::StreamableHTTPTransport the Rack-mountable Streamable HTTP transport in the mcp gem processes every incoming JSON-RPC request without ever inspecting the HTTP Host or Origin request headers. There is no AllowedHosts/AllowedOrigins allowlist and no DNS-rebinding...

Unbounded line buffer in stdio transports leads to memory exhaustion (DoS)

Summary The stdio transports in MCP::Server::Transports::StdioTransport and MCP::Client::Stdio read newline-delimited JSON-RPC frames using IOgets with no limit argument. CRuby's IOgets with no limit reads from the current position until the next separator \n with no upper bound on the returned...

json-c-devel-0.19-1.1 on GA media (moderate)

json-c-devel-0.19-1.1 on GA media Announcement ID: openSUSE-SU-2026:11188-1 Rating: moderate Cross-References: CVE-2013-6370 CVE-2013-6371 CVE-2026-11322 CVE-2026-9146 Affected Products: openSUSE Tumbleweed An update that solves 4 vulnerabilities can now be installed. Description: These are all...