GHSA-9c47-m6qq-7p4h · 深刻度： high · エコシステム： npm — Prototype Pollution in JSON5 via Parse Method
JSON5 is an extension to the popular JSON file format that aims to be easier to write and maintain by hand (e.g. for config files). The `parse` method of the JSON5 library before and including versions 1.0.1 and 2.2.1 does not restrict parsing of keys named `__proto__`, allowing specially crafted strings to pollute the prototype of the resulting object. This vulnerability pollutes the prototype of the object returned by `JSON5.parse` and not the global Object prototype, which is the commonly understood definition of Prototype Pollution. However, polluting the prototype of a single object can have significant security impact for an application if the object is later used in trusted operations. This vulnerability could allow an attacker to set arbitrary and unexpected keys on the object returned from `JSON5.parse`. The actual impact will depend on how applications utilize the returned object and how they filter unwanted keys, but could include denial of service, cross-site scripting, elevation of privilege, and in extreme cases, remote code execution. `JSON5.parse` should restrict parsing of `__proto__` keys when parsing JSON strings to objects. As a point of reference, the `JSON.parse` method included in JavaScript ignores `__proto__` keys. Simply changing `JSON5.parse` to `JSON.parse` in the examples above mitigates this vulnerability. This vulnerability is patched in json5 versions 1.0.2, 2.2.2, and later.
総合評価: CVE-2022-46175 は悪用リスクが高い（71.6/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 9.30%、95 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 42.30% | 9.30% | -33.00% |
| 2 | 2026-06-04 | 44.08% | 42.30% | -1.77% |
| 3 | 2026-05-22 | — | 44.08% | — |
EPSS の全履歴 （全 77 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 |
|---|---|---|---|---|---|---|
| 7.1 | 3.1 | HIGH |
|
1.6 | 5.5 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-9c47-m6qq-7p4h · 深刻度： high · エコシステム： npm — Prototype Pollution in JSON5 via Parse Method
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2022-46175 not yet assigned priority: Debian including 1 source packages (node-json5), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-46175 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-46175 |
ubuntu
|
medium | CVE-2022-46175 medium priority: Ubuntu including 1 source packages (node-json5), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 5, ignored 4, released 4. | https://ubuntu.com/security/CVE-2022-46175 |
| URL | タグ |
|---|---|
| https://github.com/json5/json5/issues/199 | Issue Tracking Patch Third Party Advisory |
| https://github.com/json5/json5/issues/295 | Issue Tracking Third Party Advisory |
| https://github.com/json5/json5/pull/298 | Patch Third Party Advisory |
| https://github.com/json5/json5/security/advisories/GHSA-9c47-m6qq-7p4h | Exploit Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/11/msg00021.html | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3S26TLPLVFAJTUN3VIXFDEBEXDYO22CE/ |