GHSA-p9qp-c452-f9r7 · 深刻度: high · エコシステム: pip — Synapse Denial of service due to incorrect application of event authorization rules during state resolution
Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0
総合評価: CVE-2022-39374 は中リスク(46.4/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.94%、56 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 0.16% | 0.94% | +0.78% |
| 2 | 2025-11-21 | 0.53% | 0.16% | -0.37% |
| 3 | 2025-11-18 | — | 0.53% | — |
EPSS の全履歴 (全 10 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 |
|---|---|---|---|---|---|---|
| 6.5 | 3.1 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
| 6.5 | 3.0 | MEDIUM |
|
2.8 | 3.6 | [email protected] |
GHSA-p9qp-c452-f9r7 · 深刻度: high · エコシステム: pip — Synapse Denial of service due to incorrect application of event authorization rules during state resolution
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2022-39374: 1 source package rows (synapse); 6 state rows across 6 repos (3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 6, open 0. | https://security.alpinelinux.org/vuln/CVE-2022-39374 |
debian
|
not yet assigned | CVE-2022-39374 not yet assigned priority: Debian including 1 source packages (matrix-synapse), 2 status rows across 2 suites (forky, sid): resolved 2. | https://security-tracker.debian.org/tracker/CVE-2022-39374 |
ubuntu
|
medium | CVE-2022-39374 medium priority: Ubuntu including 1 source packages (matrix-synapse), 11 status rows across 11 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, trusty, upstream, xenial): ignored 5, not-affected 3, released 3. | https://ubuntu.com/security/CVE-2022-39374 |