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Fencer Vulns
high 7.5

CVE-2015-7581 json

actionpack is vulnerable to denial of service because of a wildcard controller route

published 2016-02-16 10 y ago modified 2026-06-17 4 mo ago also GHSA-9h6g-gp95-x3q5 , EUVD-2017-0205

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.7%
EPSS 6.7% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

actionpack/lib/action_dispatch/routing/route_set.rb in Action Pack in Ruby on Rails 4.x before 4.2.5.1 and 5.x before 5.0.0.beta1.1 allows remote attackers to cause a denial of service (superfluous caching and memory consumption) by leveraging an application's use of a wildcard controller route.

Patch / fix

  • rubygems actionpack 4.2.5.1
  • rails Debian 14, Debian 13, Debian 12 2:4.2.5.1-1

debian advisories DEBIAN-CVE-2015-7581

  • ror40-rubygem-actionpack RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-7.el6
  • ror40-rubygem-actionpack RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-7.el7
  • ror40-rubygem-activerecord RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-6.el6
  • ror40-rubygem-activerecord RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-6.el7
  • ror40-rubygem-activesupport RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-4.el6
  • ror40-rubygem-activesupport RHEL 2 SOFTWARE_COLLECTIONS 1:4.0.2-4.el7
  • rh-ror41-rubygem-actionpack RHEL 2 SOFTWARE_COLLECTIONS 1:4.1.5-3.el6
  • rh-ror41-rubygem-actionpack RHEL 2 SOFTWARE_COLLECTIONS 1:4.1.5-3.el7

red hat advisories RHSA-2016:0454RHSA-2016:0296

  • portus SLE Module for Containers 12 2.0.3-2.4
  • rubygem-actionpack-4_1 OpenStack Cloud 5 4.1.9-9.1
  • rubygem-actionpack-4_2 Enterprise Storage 2.1 4.2.2-6.1

suse advisories SUSE-SU-2016:1146-1SUSE-SU-2016:0858-1SUSE-SU-2016:0457-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-7581 updated cvss 4.3

rubygem-actionpack: Object leak vulnerability for wildcard controller routes in Action Pack

  • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) ror40-rubygem-actionpack 4.0.2-7.el6, ror40-rubygem-activerecord 4.0.2-6.el6, rh-ror41-rubygem-actionpack 4.1.5-3.el6, rh-ror41-rubygem-actionview 4.1.5-4.el6, ror40-rubygem-activesupport 4.0.2-4.el6, rh-ror41-rubygem-activemodel 4.1.5-2.el6, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) ror40-rubygem-actionpack 4.0.2-7.el7, ror40-rubygem-activerecord 4.0.2-6.el7, rh-ror41-rubygem-actionpack 4.1.5-3.el7, rh-ror41-rubygem-actionview 4.1.5-4.el7, ror40-rubygem-activesupport 4.0.2-4.el7, rh-ror41-rubygem-activemodel 4.1.5-2.el7, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) ror40-rubygem-actionpack 4.0.2-7.el6, ror40-rubygem-activerecord 4.0.2-6.el6, rh-ror41-rubygem-actionpack 4.1.5-3.el6, rh-ror41-rubygem-actionview 4.1.5-4.el6, ror40-rubygem-activesupport 4.0.2-4.el6, rh-ror41-rubygem-activemodel 4.1.5-2.el6, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) ror40-rubygem-actionpack 4.0.2-7.el6, ror40-rubygem-activerecord 4.0.2-6.el6, rh-ror41-rubygem-actionpack 4.1.5-3.el6, rh-ror41-rubygem-actionview 4.1.5-4.el6, ror40-rubygem-activesupport 4.0.2-4.el6, rh-ror41-rubygem-activemodel 4.1.5-2.el6, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) ror40-rubygem-actionpack 4.0.2-7.el7, ror40-rubygem-activerecord 4.0.2-6.el7, rh-ror41-rubygem-actionpack 4.1.5-3.el7, rh-ror41-rubygem-actionview 4.1.5-4.el7, ror40-rubygem-activesupport 4.0.2-4.el7, rh-ror41-rubygem-activemodel 4.1.5-2.el7, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) ror40-rubygem-actionpack 4.0.2-7.el7, ror40-rubygem-activerecord 4.0.2-6.el7, rh-ror41-rubygem-actionpack 4.1.5-3.el7, rh-ror41-rubygem-actionview 4.1.5-4.el7, ror40-rubygem-activesupport 4.0.2-4.el7, rh-ror41-rubygem-activemodel 4.1.5-2.el7, +2 more
    +2 more products
    Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) ror40-rubygem-actionpack 4.0.2-7.el6, ror40-rubygem-activerecord 4.0.2-6.el6, rh-ror41-rubygem-actionpack 4.1.5-3.el6, rh-ror41-rubygem-actionview 4.1.5-4.el6, ror40-rubygem-activesupport 4.0.2-4.el6, rh-ror41-rubygem-activemodel 4.1.5-2.el6, +2 more Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) ror40-rubygem-actionpack 4.0.2-7.el7, ror40-rubygem-activerecord 4.0.2-6.el7, rh-ror41-rubygem-actionpack 4.1.5-3.el7, rh-ror41-rubygem-actionview 4.1.5-4.el7, ror40-rubygem-activesupport 4.0.2-4.el7, rh-ror41-rubygem-activemodel 4.1.5-2.el7, +2 more
    fixed: vendor fix RHSA-2016:0296
  • Red Hat CloudForms Management Engine 5 ruby193-rubygem-actionpack Red Hat Software Collections ruby193-rubygem-actionpack Red Hat Subscription Asset Manager rubygem-actionpack, ruby193-rubygem-actionpack
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

6.71% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
rubygems actionpack
>=4.0.0, <4.2.5.1
4.2.5.1

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.