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 available.

Python JSON Logger is a JSON Formatter for Python Logging. Between 30 December 2024 and 4 March 2025 Python JSON Logger was vulnerable to RCE through a missing dependency. This occurred because msgspec-python313-pre was deleted by the owner leaving the name open to being claimed by a third party. If the package was claimed, it would allow them RCE on any Python JSON Logger user who installed the development dependencies on Python 3.13 (e.g. pip install python-json-logger[dev]). This issue has been resolved with 3.3.0.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Form To JSON allows Reflected XSS. This issue affects Form To JSON: from n/a through 1.0.

Incorrect Authorization vulnerability in Drupal Drupal REST & JSON API Authentication allows Forceful Browsing.This issue affects Drupal REST & JSON API Authentication: from 0.0.0 before 2.0.13.

There is a deserialization of untrusted data vulnerability in the Kredis JSON deserialization code

Prototype Pollution in lukebond json-override 0.2.0 allows attackers to to execute arbitrary code or cause a Denial of Service (DoS) via the __proto__ property.

Server-Side Request Forgery (SSRF) vulnerability in Bernhard Kux JSON Content Importer.This issue affects JSON Content Importer: from n/a through 1.5.6.

The JSON API User plugin for WordPress is vulnerable to privilege escalation in all versions up to, and including, 3.9.3. This is due to improper controls on custom user meta fields. This makes it possible for unauthenticated attackers to register as administrators on the site. The plugin requires the JSON API plugin to also be installed.

Tencent RapidJSON is vulnerable to privilege escalation due to an integer overflow in the `GenericReader::ParseNumber()` function of `include/rapidjson/reader.h` when parsing JSON text from a stream. An attacker needs to send the victim a crafted file which needs to be opened; this triggers the integer overflow vulnerability (when the file is parsed), leading to elevation of privilege.

Tencent RapidJSON is vulnerable to privilege escalation due to an integer underflow in the `GenericReader::ParseNumber()` function of `include/rapidjson/reader.h` when parsing JSON text from a stream. An attacker needs to send the victim a crafted file which needs to be opened; this triggers the integer underflow vulnerability (when the file is parsed), leading to elevation of privilege.