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...

DEBIAN-CVE-2026-54899

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. Prior to version 3.17.2, disabling symbolkeys on a reused Oj::Parser instance triggers a heap use-after-free. When symbolkeys is toggled from true to false, optsymbolkeysset frees the internal key cache cachefree but...

CVE-2026-54898

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2,Oj::Parserparse is vulnerable to a heap use-after-free when a SAJ/SAJ2 callback mutates the input JSON string during parsing. The C engine holds a raw const byte pointer into the Ruby...

UBUNTU-CVE-2026-54898

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2,Oj::Parserparse is vulnerable to a heap use-after-free when a SAJ/SAJ2 callback mutates the input JSON string during parsing. The C engine holds a raw const byte pointer into the Ruby...

UBUNTU-CVE-2026-54900

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, when in usual mode with createid enabled, Oj::Parserparse is vulnerable to heap corruption via a negative-size memcpy. When a JSON object key is exactly 65,535 bytes long, an integer...

UBUNTU-CVE-2026-54896

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, when in object mode, Oj.dump is vulnerable to a heap buffer overflow when serializing Exception objects with a large :indent value. The serializer allocates a buffer sized for the object'...

EUVD-2026-40858

Oj Optimized JSON is a JSON parser and Object marshaller packaged as a Ruby gem. In versions prior to 3.17.2, Oj.load is vulnerable to heap corruption when parsing a JSON string longer than 2 GB. An integer overflow in bufappendstring buf.h:61 converts the string length to a large negative sizet,...

Out-of-bounds Read in Ruby JSON Parser

Impact A specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions 2.10.0 and 2.10.1 are impacted. Older versions are not. Patches Version 2.10.2 fixes the problem. Workarounds None...

GHSA-9M3Q-RHMV-5Q44 Out-of-bounds Read in Ruby JSON Parser

Impact A specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions 2.10.0 and 2.10.1 are impacted. Older versions are not. Patches Version 2.10.2 fixes the problem. Workarounds None...

CVE-2025-27788

The CVE-2025-27788 entry corresponds to a Ruby JSON parser vulnerability (CVE-2025-27788) with out-of-bounds read leading to crashes. In IBM’s advisory, the affected products are: IBM watsonx Assistant Cartridge (versions 4.0–5.2.0) and IBM watsonx Orchestrate with watsonx Assistant Cartridge – A...

CVE-2025-27788 Ruby JSON Parser has Out-of-bounds Read

JSON is a JSON implementation for Ruby. Starting in version 2.10.0 and prior to version 2.10.2, a specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions prior to 2.10.0 are not vulnerable. Version 2.10.2 fixes the problem. No known workarounds are...

CVE-2025-27788 Ruby JSON Parser has Out-of-bounds Read

JSON is a JSON implementation for Ruby. Starting in version 2.10.0 and prior to version 2.10.2, a specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions prior to 2.10.0 are not vulnerable. Version 2.10.2 fixes the problem. No known workarounds are...

Out-of-bounds Read in Ruby JSON Parser

Impact A specially crafted document could cause an out of bound read, most likely resulting in a crash. Versions 2.10.0 and 2.10.1 are impacted. Older versions are not. Patches Version 2.10.2 fixes the problem. Workarounds None...