Publish GHSA-57hq-95w6-v4fc

Author: advisory-database[bot]

advisories/github-reviewed/2026/03/GHSA-57hq-95w6-v4fc/GHSA-57hq-95w6-v4fc.json

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+{
+  "schema_version": "1.4.0",
+  "id": "GHSA-57hq-95w6-v4fc",
+  "modified": "2026-03-17T17:24:17Z",
+  "published": "2026-03-17T17:24:17Z",
+  "aliases": [
+    "CVE-2026-32700"
+  ],
+  "summary": "Devise has a confirmable \"change email\" race condition permits user to confirm email they have no access to",
+  "details": "### Impact\n\nA race condition in Devise's Confirmable module allows an attacker to confirm an email address they do not own. This affects any Devise application using the `reconfirmable` option (the default when using Confirmable with email changes).\n\nBy sending two concurrent email change requests, an attacker can desynchronize the `confirmation_token` and `unconfirmed_email` fields. The confirmation token is sent to an email the attacker controls, but the `unconfirmed_email` in the database points to a victim's email address. When the attacker uses the token, the victim's email is confirmed on the attacker's account.\n\n### Patches\n\nThis is patched in Devise **v5.0.3**. Users should upgrade as soon as possible.\n\n### Workarounds\n\nApplications can override this specific method from Devise models to force `unconfirmed_email` to be persisted when unchanged: (assuming your model is `User`)\n\n```ruby\nclass User < ApplicationRecord\n  protected\n\n  def postpone_email_change_until_confirmation_and_regenerate_confirmation_token\n    unconfirmed_email_will_change!\n    super\n  end\nend\n```\n\nNote: Mongoid does not seem to respect that `will_change!` should force the attribute to be persisted, even if it did not really change, so you might have to implement a workaround similar to Devise by setting `changed_attributes[\"unconfirmed_email\"] = nil` as well.",
+  "severity": [
+    {
+      "type": "CVSS_V4",
+      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
+    }
+  ],
+  "affected": [
+    {
+      "package": {
+        "ecosystem": "RubyGems",
+        "name": "devise"
+      },
+      "ranges": [
+        {
+          "type": "ECOSYSTEM",
+          "events": [
+            {
+              "introduced": "0"
+            },
+            {
+              "fixed": "5.0.3"
+            }
+          ]
+        }
+      ],
+      "database_specific": {
+        "last_known_affected_version_range": "<= 5.0.2"
+      }
+    }
+  ],
+  "references": [
+    {
+      "type": "WEB",
+      "url": "https://github.com/heartcombo/devise/security/advisories/GHSA-57hq-95w6-v4fc"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/heartcombo/devise/issues/5783"
+    },
+    {
+      "type": "WEB",
+      "url": "https://github.com/heartcombo/devise/pull/5784"
+    },
+    {
+      "type": "PACKAGE",
+      "url": "https://github.com/heartcombo/devise"
+    }
+  ],
+  "database_specific": {
+    "cwe_ids": [
+      "CWE-362"
+    ],
+    "severity": "MODERATE",
+    "github_reviewed": true,
+    "github_reviewed_at": "2026-03-17T17:24:17Z",
+    "nvd_published_at": null
+  }
+}