7.5

CVE-2013-0269: rubygems json_gem Improper Input Validation

Modified
AliasesUBUNTU-CVE-2013-0269DEBIAN-CVE-2013-0269DLA-215-1
Published 13-02-2013Last modified 06-08-2024

Vulnerability summary

CVE-2013-0269 is a high (CVSS 7.5) Improper Input Validation vulnerability in rubygems json_gem. EPSS estimates a 13.91% chance of exploitation in the next 30 days, higher than 96.5% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v2.0 (NVD)
EPSS score
13.91%
0%100%
Medium · +0.53 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2
DLA-263-1RHSA-2013:0701

Timeline

  1. 13-02-2013
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

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."

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

13.91%

Chance of exploitation in the next 30 days

Percentile

97%

Versus all other CVEs

30-day change

Increase +0.53 pp

From 13.39% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Debian2 products
  • libjson-ruby< 1.1.9-1+deb6u1
  • ruby-json< 1.7.3-3
RubyGems2 products
  • json< 1.5.5 | ≥ 1.6.0, < 1.6.8 | ≥ 1.7.0, < 1.7.7
  • json_gem1.5.0 | 1.5.1 | 1.5.2 | 1.5.3 | 1.5.4 | 1.6.0 | 1.6.1 | 1.6.2 | 1.6.3 | 1.6.4 | 1.6.5 | 1.6.6 | 1.6.7 | 1.7.0 | 1.7.1 | 1.7.2 | 1.7.3 | 1.7.4 | 1.7.5 | 1.7.6
Ubuntu1 product
  • ruby-json< 1.8.0-1

3 vendors · 5 products

References

36 links
Show all 36 references