GHSA-vpfw-47h7-xj4g · 深刻度： medium · エコシステム： rubygems — Rack session gets restored after deletion
Rack is a modular Ruby web server interface. Prior to version 2.2.14, when using the `Rack::Session::Pool` middleware, simultaneous rack requests can restore a deleted rack session, which allows the unauthenticated user to occupy that session. Rack session middleware prepares the session at the beginning of request, then saves is back to the store with possible changes applied by host rack application. This way the session becomes to be a subject of race conditions in general sense over concurrent rack requests. When using the `Rack::Session::Pool` middleware, and provided the attacker can acquire a session cookie (already a major issue), the session may be restored if the attacker can trigger a long running request (within that same session) adjacent to the user logging out, in order to retain illicit access even after a user has attempted to logout. Version 2.2.14 contains a patch for the issue. Some other mitigations are available. Either ensure the application invalidates sessions atomically by marking them as logged out e.g., using a `logged_out` flag, instead of deleting them, and check this flag on every request to prevent reuse; or implement a custom session store that tracks session invalidation timestamps and refuses to accept session data if the session was invalidated after the request began.
総合評価: CVE-2025-32441 は低リスク（19.8/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.18%、8 パーセンタイル） 推奨対応: 総合リスクは低く緊急対応は不要です。通常の保守サイクルでパッチを適用し、CVSS / EPSS が上昇したら優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.06% | 0.18% | +0.13% |
| 2 | 2026-01-21 | 0.04% | 0.06% | +0.02% |
| 3 | 2025-11-21 | — | 0.04% | — |
EPSS の全履歴 （全 7 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 4.2 | 3.1 | MEDIUM |
|
1.6 | 2.5 | [email protected] |
| 4.2 | 3.1 | MEDIUM |
|
1.6 | 2.5 | [email protected] |
GHSA-vpfw-47h7-xj4g · 深刻度： medium · エコシステム： rubygems — Rack session gets restored after deletion
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2025-32441 not yet assigned priority: Debian including 1 source packages (ruby-rack), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2025-32441 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2025-32441 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2025-32441/ |
ubuntu
|
medium | CVE-2025-32441 medium priority: Ubuntu including 1 source packages (ruby-rack), 10 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): released 9, needs-triage 1. | https://ubuntu.com/security/CVE-2025-32441 |