CVE-2016-6317: rubyonrails rails Improper Access Control
Vulnerability summary
CVE-2016-6317 is a high (CVSS 7.5) Improper Access Control vulnerability in rubyonrails rails. EPSS estimates a 3.90% chance of exploitation in the next 30 days, higher than 90.2% of scored vulnerabilities.
Severe, CVSS 7.5 (NVD); no exploitation reported by the 5 checked sources; EPSS 4% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 07-09-2016PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
Action Record in Ruby on Rails 4.2.x before 4.2.7.1 does not properly consider differences in parameter handling between the Active Record component and the JSON implementation, which allows remote attackers to bypass intended database-query restrictions and perform NULL checks or trigger missing WHERE clauses via a crafted request, as demonstrated by certain "[nil]" values, a related issue to CVE-2012-2660, CVE-2012-2694, and CVE-2013-0155.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · RubygemsEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
3.90%
Chance of exploitation in the next 30 days
Percentile
90%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.90% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- rails< 2:4.2.7.1-1
RubyGems1 product
- activerecord≥ 4.2.0, < 4.2.7.1
Rubyonrails1 product
- railsEOL4.2.0 | 4.2.0:beta1 | 4.2.0:beta2 | 4.2.0:beta3 | 4.2.0:beta4 | 4.2.0:rc1 | 4.2.0:rc2 | 4.2.0:rc3 | 4.2.1 | 4.2.1:rc1 | 4.2.1:rc2 | 4.2.1:rc3 | 4.2.1:rc4 | 4.2.2 | 4.2.3 | 4.2.3:rc1 | 4.2.4 | 4.2.4:rc1 | 4.2.5 | 4.2.5:rc1 | 4.2.5:rc2 | 4.2.5.1 | 4.2.5.2 | 4.2.6 | 4.2.6:rc1 | 4.2.7 | 4.2.7:rc1
3 vendors · 3 products
References
11 links- www.openwall.com/lists/oss-security/2016/08/11/4Mailing ListX Refsource MLISTThird Party AdvisoryWEB
- weblog.rubyonrails.org/2016/8/11/Rails-5-0-0-1-4-2-7-2-and-3-2-22-3-have-been-released/X Refsource CONFIRMRelease Notes