Active Support Possibly Discloses Locally Encrypted Files

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 0.0027, the 19th 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-cr5q-6q9f-rq6q
• OSV: GHSA-cr5q-6q9f-rq6q
• nvd.nist.gov/vuln/detail/CVE-2023-38037
• github.com/rails/rails/commit/a21d6edf35a60383dfa6c4da49e4b1aef5f00731
• discuss.rubyonrails.org/t/cve-2023-38037-possible-file-disclosure-of-locally-encrypted-files/83544
• github.com/rails/rails
• github.com/rails/rails/releases/tag/v7.0.7.1
• github.com/rubysec/ruby-advisory-db/blob/master/gems/activesupport/CVE-2023-38037.yml
• security.netapp.com/advisory/ntap-20250214-0010

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.