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Json Gem CVE-2013-0269

HIGH
Improper Input Validation (CWE-20)
2013-02-13 secalert@redhat.com
7.5
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 15.42%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
Patch available 15.4% exploitation probability (EPSS)

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AnalysisAI

The JSON gem before 1.5.5, 1.6.x before 1.6.8, and 1.7.x before 1.7.7 for Ruby allows remote attackers to cause a denial of service (resource consumption) or bypass the mass assignment protection. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 15.4%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affected Packages

rubygems json fix: 1.5.5, 1.6.8, 1.7.7

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in rubygems

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-20. The JSON gem before 1.5.5, 1.6.x before 1.6.8, and 1.7.x before 1.7.7 for Ruby allows remote attackers to cause a denial of service (resource consumption) or bypass the mass assignment protection mechanism via a crafted JSON document that triggers the creation of arbitrary Ruby symbols or certain internal objects, as demonstrated by conducting a SQL injection attack against Ruby on Rails, aka "Unsafe Object Creation Vulnerability." Affected products include: Rubygems Json Gem. Version information: before 1.5.5.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

The JSON gem before 1.5.5, 1.6.x before 1.6.8, and 1.7.x before 1.7.7 for Ruby allows remote attackers to cause a denial of service (resource consumption) or bypass the mass assignment protection mechanism via a crafted JSON document that triggers the creation of arbitrary Ruby symbols or certain internal objects, as demonstrated by conducting a SQL injection attack against Ruby on Rails, aka "Unsafe Object Creation Vulnerability."

Threat Intelligence Overview

EPSS Score
15.4%
Top 5% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 15.4%
Patch available Yes
Active threat No
Deciding rule
HIGH severity + EPSS > 10%
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

53
Low Medium High Critical
KEV: 0
EPSS: +15
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:rubygems:json_gem:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.5.1:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.5.2:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.5.3:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.1:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.2:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.3:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.4:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.5:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.6:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.6.7:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.0:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.1:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.2:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.3:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.4:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.5:*:*:*:*:*:*:*
cpe:2.3:a:rubygems:json_gem:1.7.6:*:*:*:*:*:*:*

References

Advisories & patches

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