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9.8

REST client for Ruby (rest-client) allows session fixation attacks via cookies

CVE-2015-1820 · published 9 years ago
Summary

If you use an outdated version of rest-client in Ruby, a hacker could potentially steal your users' session cookies or hijack their sessions. This could allow them to access your users' accounts without needing a password. Update rest-client to version 1.8.0 or later to fix this issue.

What to do
  • Update rest client team rest-client to version 1.8.0.
Affected software
Ecosystem VendorProductAffected versions
rubygems rest client team rest-client >= 1.6.1.a, < 1.8.0
Fix: upgrade to 1.8.0
– rest-client_project rest-client <= 1.7.3
cpe:2.3:a:rest-client_project:rest-client:*:*:*:*:*:ruby:*:*
Original advisory text
REST client for Ruby (aka rest-client) before 1.8.0 allows remote attackers to conduct session fixation attacks or obtain sensitive cookie information by leveraging passage of cookies set in a resp...
REST client for Ruby (aka rest-client) before 1.8.0 allows remote attackers to conduct session fixation attacks or obtain sensitive cookie information by leveraging passage of cookies set in a response to a redirect.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker full control (estimated)
Severity
9.8 Critical
Exploitation
4% chance of attack within 30 days
Type
CWE-384Session Fixation
Timeline
Published9 Aug 2017
Updated29 Oct 2026
First seen6 Mar 2026
Sources
GHSA-3fhf-6939-qg8p · GHSA
CVE-2015-1820 · NVD
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