What is CVE-2015-7577?

CVE-2015-7577 is a medium-severity vulnerability in Rubyonrails Rails, classified under Improper Access Control. CVSS score: 5.3/10. Published 2016-02-16.

How severe is CVE-2015-7577?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2015-7577 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Rubyonrails Rails

CVE-2015-7577

activerecord/lib/active_record/nested_attributes.rb in Active Record in Ruby on Rails 3.1.x and 3.2.x before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1, and 5.x before 5.0.0.beta1.1 does not properly implement a certain destroy option, which allows remote attackers to bypass intended change restrictions by leveraging use of the nested attributes feature.

Published 2016-02-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.043 (90.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000

Affected products

Rubyonrails Rails — versions 4.0.0, 4.0.1, 4.0.2
Rubyonrails Ruby On Rails — versions 4.0.10, 4.0.11, 4.0.11.1

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

lists.opensuse.org/opensuse-updates/2016-02/msg00043.html (vendor-advisory)
lists.opensuse.org/opensuse-updates/2016-02/msg00034.html (vendor-advisory)
lists.fedoraproject.org/pipermail/package-announce/2016-February/178041.html (vendor-advisory)
lists.fedoraproject.org/pipermail/package-announce/2016-February/178065.html (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2016-04/msg00053.html (vendor-advisory)
groups.google.com/forum/message/raw (mailing-list)
www.securitytracker.com/id/1034816 (vdb-entry)
www.securityfocus.com/bid/81806 (vdb-entry)
www.debian.org/security/2016/dsa-3464 (vendor-advisory)
rhn.redhat.com/errata/RHSA-2016-0296.html (vendor-advisory)

Frequently asked questions

What is CVE-2015-7577?: CVE-2015-7577 is a medium-severity vulnerability in Rubyonrails Rails, classified under Improper Access Control. CVSS score: 5.3/10. Published 2016-02-16.
How severe is CVE-2015-7577?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2015-7577 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.