GHSA-h27x-rffw-24p4 · 深刻度: high · エコシステム: rubygems — Addressable has a Regular Expression Denial of Service in Addressable templates
Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.3.0 to before 2.9.0, within the URI template implementation in Addressable, two classes of URI template generate regular expressions vulnerable to catastrophic backtracking. Templates using the * (explode) modifier with any expansion operator (e.g., {foo*}, {+var*}, {#var*}, {/var*}, {.var*}, {;var*}, {?var*}, {&var*}) generate patterns with nested unbounded quantifiers that are O(2^n) when matched against a maliciously crafted URI. Templates using multiple variables with the + or # operators (e.g., {+v1,v2,v3}) generate patterns with O(n^k) complexity due to the comma separator being within the matched character class, causing ambiguous backtracking across k variables. When matched against a maliciously crafted URI, this can result in catastrophic backtracking and uncontrolled resource consumption, leading to denial of service. This vulnerability is fixed in 2.9.0.
総合評価: CVE-2026-35611 は中リスク(40/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.36%、28 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 | 0.03% | 0.36% | +0.33% |
| 2 | 2026-05-22 | 0.05% | 0.03% | -0.02% |
| 3 | 2026-04-13 | — | 0.05% | — |
EPSS の全履歴 (全 4 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 | [email protected] |
GHSA-h27x-rffw-24p4 · 深刻度: high · エコシステム: rubygems — Addressable has a Regular Expression Denial of Service in Addressable templates
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-35611 not yet assigned priority: Debian including 1 source packages (ruby-addressable), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-35611 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-35611 |
suse
|
medium | — | https://www.suse.com/security/cve/CVE-2026-35611/ |
ubuntu
|
medium | CVE-2026-35611 medium priority: Ubuntu including 1 source packages (ruby-addressable), 7 status rows across 7 suites (bionic, focal, jammy, noble, questing, upstream, xenial): needs-triage 7. | https://ubuntu.com/security/CVE-2026-35611 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| addressable_project | addressable | >= 2.3.0, < 2.9.0 | cpe:2.3:a:addressable_project:addressable:*:*:*:*:*:ruby:*:* |
| URL | タグ |
|---|---|
| https://github.com/sporkmonger/addressable/security/advisories/GHSA-h27x-rffw-24p4 | Mitigation Vendor Advisory |