# CVE-2013-0269: JSON gem has Improper Input Validation vulnerability

Source: https://junglewise.ai/threats/cve-2013-0269-json-gem-has-improper-input-validation-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2017-10-24  
License: CC BY 4.0 with a link back

CVE-2013-0269 · Severity: info · Published 2017-10-24

JSON gem has Improper Input Validation vulnerability

Technologies: [json (RubyGems)](https://junglewise.ai/threats/technologies/rubygems-json). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2013-0269 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2013-0269 being exploited in the wild.

**How severe is CVE-2013-0269?** Informational severity, published 24 October 2017.

**Which products and versions are affected?** json (RubyGems) ECOSYSTEM:introduced=0,fixed=1.5.5.

**Is there a fix for CVE-2013-0269?** Yes. json (RubyGems): upgrade to 1.5.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2013-0269?** Check whether you run json (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- json (RubyGems): upgrade to 1.5.5 or later

  ```sh
  bundle update json
  ```


## Affected products

- json (RubyGems) ECOSYSTEM:introduced=0,fixed=1.5.5

## Identifiers

- CVE-2013-0269
- GHSA-x457-cw4h-hq5f

## Related threats

- [Ruby JSON heap-use-after-free in ResumableParser](https://junglewise.ai/threats/cve-2026-71847-ruby-json-heap-use-after-free-in-resumableparser)
- [Ruby JSON heap buffer overflow in JSON generator streaming](https://junglewise.ai/threats/cve-2026-54696-ruby-json-heap-buffer-overflow-in-json-generator-streaming)
- [Ruby JSON format string injection in JSON parser](https://junglewise.ai/threats/cve-2026-33210-ruby-json-format-string-injection-in-json-parser)
- [Out-of-bounds Read in Ruby JSON Parser](https://junglewise.ai/threats/cve-2025-27788-out-of-bounds-read-in-ruby-json-parser)
- [Unsafe object creation in json RubyGem](https://junglewise.ai/threats/cve-2020-10663-unsafe-object-creation-in-json-rubygem)