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Fencer Intel
medium 5.0

CVE-2014-7829 json

Directory traversal vulnerability in actionpack

published 2014-11-18 11 y ago modified 2026-06-17 4 mo ago also GHSA-h56m-vwxc-3qpw , EUVD-2017-0245

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.2%
EPSS 4.2% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Directory traversal vulnerability in actionpack/lib/action_dispatch/middleware/static.rb in Action Pack in Ruby on Rails 3.x before 3.2.21, 4.0.x before 4.0.12, 4.1.x before 4.1.8, and 4.2.x before 4.2.0.beta4, when serve_static_assets is enabled, allows remote attackers to determine the existence of files outside the application root via vectors involving a \ (backslash) character, a similar issue to CVE-2014-7818.

Patch / fix

  • rubygems actionpack 3.2.21, 4.0.12, 4.1.8, 4.2.0.beta4
  • rails Debian 14, Debian 13, Debian 12 2:4.1.8-1

debian advisories DEBIAN-CVE-2014-7829

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-2014-7829 updated cvss 5.0

rubygem-actionpack: incomplete fix for CVE-2014-7818, arbitrary file existence disclosure

  • Red Hat CloudForms Management Engine 5 ruby193-rubygem-actionpack Red Hat OpenStack Platform 4 ruby193-rubygem-actionpack Red Hat Software Collections ror40-rubygem-actionpack, ruby193-rubygem-actionpack Red Hat Subscription Asset Manager rubygem-actionpack, ruby193-rubygem-actionpack
    affected: no fix planned “Will not fix”

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

4.16% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • groups.google.com https://groups.google.com/forum/message/raw?msg=rubyonrails-security/rMTQy4oRCGk/loS_CRS8mNEJ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected packages

ecosystem package affected fixed in
rubygems actionpack
>=4.1.0, <4.1.8
>=3.0.0, <3.2.21
>=4.0.0, <4.0.12
>=4.2.0.beta1, <4.2.0.beta4
4.1.8
3.2.21
4.0.12
4.2.0.beta4

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory
Technology feeds

References

Sources

Fencer Intel 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.