Rails has possible Sensitive Session Information Leak in Active Storage

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.013, the 69th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 15:16 UTC First seen by agentprime
2. 31 Oct 2026, 15:16 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-8h22-8cf7-hq6g
• OSV: GHSA-8h22-8cf7-hq6g
• github.com/rails/rails/security/advisories/GHSA-8h22-8cf7-hq6g
• nvd.nist.gov/vuln/detail/CVE-2024-26144
• github.com/rails/rails/commit/723f54566023e91060a67b03353e7c03e7436433
• github.com/rails/rails/commit/78fe149509fac5b05e54187aaaef216fbb5fd0d3
• discuss.rubyonrails.org/t/possible-sensitive-session-information-leak-in-active-storage/84945
• github.com/rails/rails
• github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26144.yml
• github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2024-26144.yml
• security.netapp.com/advisory/ntap-20240510-0013

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.