GHSA-c2c7-rcm5-vvqj · 深刻度： high · エコシステム： npm — Picomatch has a ReDoS vulnerability via extglob quantifiers
Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) when processing crafted extglob patterns. Certain patterns using extglob quantifiers such as `+()` and `*()`, especially when combined with overlapping alternatives or nested extglobs, are compiled into regular expressions that can exhibit catastrophic backtracking on non-matching input. Applications are impacted when they allow untrusted users to supply glob patterns that are passed to `picomatch` for compilation or matching. In those cases, an attacker can cause excessive CPU consumption and block the Node.js event loop, resulting in a denial of service. Applications that only use trusted, developer-controlled glob patterns are much less likely to be exposed in a security-relevant way. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release line. If upgrading is not immediately possible, avoid passing untrusted glob patterns to `picomatch`. Possible mitigations include disabling extglob support for untrusted patterns by using `noextglob: true`, rejecting or sanitizing patterns containing nested extglobs or extglob quantifiers such as `+()` and `*()`, enforcing strict allowlists for accepted pattern syntax, running matching in an isolated worker or separate process with time and resource limits, and applying application-level request throttling and input validation for any endpoint that accepts glob patterns.
総合評価: CVE-2026-33671 は中リスク（41.8/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.41%、33 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 | 0.02% | 0.41% | +0.39% |
| 2 | 2026-04-21 | 0.05% | 0.02% | -0.03% |
| 3 | 2026-04-01 | — | 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-c2c7-rcm5-vvqj · 深刻度： high · エコシステム： npm — Picomatch has a ReDoS vulnerability via extglob quantifiers
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2026-33671 not yet assigned priority: Debian including 1 source packages (node-anymatch), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. | https://security-tracker.debian.org/tracker/CVE-2026-33671 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-33671 |
ubuntu
|
medium | CVE-2026-33671 medium priority: Ubuntu including 1 source packages (node-anymatch), 6 status rows across 6 suites (bionic, focal, jammy, noble, questing, upstream): needs-triage 5, released 1. | https://ubuntu.com/security/CVE-2026-33671 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| jonschlinkert | picomatch | < 2.3.2 | cpe:2.3:a:jonschlinkert:picomatch:*:*:*:*:*:node.js:*:* |
| jonschlinkert | picomatch | >= 3.0.0, < 3.0.2 | cpe:2.3:a:jonschlinkert:picomatch:*:*:*:*:*:node.js:*:* |
| jonschlinkert | picomatch | >= 4.0.0, < 4.0.4 | cpe:2.3:a:jonschlinkert:picomatch:*:*:*:*:*:node.js:*:* |