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Out-of-bounds Read in Ruby JSON Parser

High severity GitHub Reviewed Published Mar 12, 2025 in ruby/json • Updated Mar 12, 2025

Package

bundler json (RubyGems)

Affected versions

>= 2.10.0, <= 2.10.1

Patched versions

2.10.2

Description

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.

References

@byroot byroot published to ruby/json Mar 12, 2025
Published by the National Vulnerability Database Mar 12, 2025
Published to the GitHub Advisory Database Mar 12, 2025
Reviewed Mar 12, 2025
Last updated Mar 12, 2025

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS score

Weaknesses

CVE ID

CVE-2025-27788

GHSA ID

GHSA-9m3q-rhmv-5q44

Source code

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