RubyGems/devise CVE-2026-40295: medium 6.1, EPSS 0.24%

Devise has an Open Redirect via Unvalidated `request.referrer` in Timeoutable Session Timeout Handler

Action: Upgrade devise to 5.0.4 or later.

bundle update devise

Affected

Fixed versions

Sources

• osv: GHSA-jp94-3292-c3xv
• https://github.com/heartcombo/devise/security/advisories/GHSA-jp94-3292-c3xv
• https://nvd.nist.gov/vuln/detail/CVE-2026-40295
• https://github.com/heartcombo/devise/commit/025fe2124f9928766fc46520e999633b598d0360
• https://github.com/heartcombo/devise
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/devise/CVE-2026-40295.yml

CVE-2026-40295 · published 2026-05-08T15:41:47Z · modified 2026-09-10T03:51:06.249835585Z · JSON