GHSA-jfc8-2xw7-c79m · 深刻度: high — An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in...
An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in the pthread-based getaddrinfo timeout handler (rb_getaddrinfo in ext/socket/raddrinfo.c) allows a remote attacker who can delay DNS responses near the user-specified timeout to crash a Ruby process that calls Addrinfo.getaddrinfo(..., timeout:) or Socket.tcp(..., resolv_timeout:). Memory-corruption-based exploitation is theoretically possible. The attack could, for example, be carried out through a crafted authoritative DNS server or recursive resolver.
総合評価: CVE-2026-46727 は中リスク(45.8/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.48%、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 | 2026-06-15 | 0.16% | 0.48% | +0.32% |
| 2 | 2026-05-28 | 0.10% | 0.16% | +0.06% |
| 3 | 2026-05-23 | — | 0.10% | — |
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 |
|---|---|---|---|---|---|---|
| 8.1 | 3.1 | HIGH |
|
2.2 | 5.9 | [email protected] |
GHSA-jfc8-2xw7-c79m · 深刻度: high — An issue was discovered in Ruby 4 before 4.0.5. A race condition leading to a use-after-free in...
| vendor | priority | summary | link |
|---|---|---|---|
suse
|
high | CVE-2026-46727 severity important: SUSE including 11 source package names (libruby2_1-2_1, libruby2_5-2_5, …), 105 product×package rows across 20 product lines (SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS, SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS, … (20 product lines)): Known Not Affected 105. | https://www.suse.com/security/cve/CVE-2026-46727/ |
ubuntu
|
medium | CVE-2026-46727 medium priority: Ubuntu including 7 source packages (jruby, ruby2.3, …), 41 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 21, needs-triage 20. | https://ubuntu.com/security/CVE-2026-46727 |
| URL | タグ |
|---|---|
| https://hackerone.com/reports/3607434 | Permissions Required |
| https://www.ruby-lang.org/en/news/2026/05/20/getaddrinfo-cve-2026-46727/ | Vendor Advisory |