CVE-2020-8166
CVSS v3
4.3
MEDIUM
EPSS Score
1.7 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Get an alert for each new CVE published for rubygem-actionpack.
Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- actionpackRubyGemsfrom 6.0.0 · fixed in 6.0.3.1
Vendor advisories
rubygem-actionpack: ability to forge per-form CSRF tokens given a global CSRF token
cfme-gemset as a component of CloudForms Management Engine 5 · cfme-gemset.src as a component of CloudForms Management Engine 5
Red Hat Security Advisory: Satellite 6.9 Release
Description
A CSRF forgery vulnerability exists in rails < 5.2.5, rails < 6.0.4 that makes it possible for an attacker to, given a global CSRF token such as the one present in the authenticity_token meta tag, forge a per-form CSRF token.
Technical details
- Published
- 2020-07-02
Frequently asked questions
What is CVE-2020-8166?
Is CVE-2020-8166 actively exploited?
What is the CVSS score for CVE-2020-8166?
Running rubygem-actionpack? Hear about its next vulnerability
CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.
Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month
Go further
- Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
- Running this software? CVE Watch alerts you to new vulnerabilities in your products.
Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.