GHSA-vxpw-j846-p89q · 深刻度： high · エコシステム： npm — undici WebSocket client vulnerable to denial of service via fragment count bypass
Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. All releases starting at undici 6.17.0 are affected. Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds: No workaround is available. The fix must be applied through an upgrade.
総合評価: CVE-2026-12151 は中リスク（42.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.46%、37 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 | 2026-06-27 | 0.43% | 0.46% | +0.03% |
| 2 | 2026-06-23 | 0.28% | 0.43% | +0.14% |
| 3 | 2026-06-18 | — | 0.28% | — |
EPSS の全履歴 （全 3 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 |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | ce714d77-add3-4f53-aff5-83d477b104bb |
GHSA-vxpw-j846-p89q · 深刻度： high · エコシステム： npm — undici WebSocket client vulnerable to denial of service via fragment count bypass
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-12151 not yet assigned priority: Debian including 1 source packages (node-undici), 4 status rows across 4 suites (bookworm, forky, sid, trixie): open 3, resolved 1. | https://security-tracker.debian.org/tracker/CVE-2026-12151 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-12151 |
suse
|
medium | CVE-2026-12151 severity moderate: SUSE including 24 source package names (nodejs10, nodejs10-devel, …), 79 product×package rows across 12 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (12 product lines)): Known Not Affected 79. | https://www.suse.com/security/cve/CVE-2026-12151/ |
ubuntu
|
medium | CVE-2026-12151 medium priority: Ubuntu including 1 source packages (node-undici), 5 status rows across 5 suites (jammy, noble, questing, resolute, upstream): needs-triage 4, DNE 1. | https://ubuntu.com/security/CVE-2026-12151 |
| URL | タグ |
|---|---|
| https://cna.openjsf.org/security-advisories.html | Vendor Advisory |
| https://github.com/nodejs/undici/security/advisories/GHSA-vxpw-j846-p89q | Vendor Advisory |