GHSA-x275-h9j4-7p4h · 深刻度： medium · エコシステム： composer — Kirby vulnerable to path traversal of collection names during file system lookup
Kirby is an open-source content management system. A vulnerability in versions prior to 3.9.8.3, 3.10.1.2, and 4.7.1 affects all Kirby sites that use the `collection()` helper or `$kirby->collection()` method with a dynamic collection name (such as a collection name that depends on request or user data). Sites that only use fixed calls to the `collection()` helper/`$kirby->collection()` method (i.e. calls with a simple string for the collection name) are *not* affected. A missing path traversal check allowed attackers to navigate and access all files on the server that were accessible to the PHP process, including files outside of the collections root or even outside of the Kirby installation. PHP code within such files was executed. Such attacks first require an attack vector in the site code that is caused by dynamic collection names, such as `collection('tags-' . get('tags'))`. It generally also requires knowledge of the site structure and the server's file system by the attacker, although it can be possible to find vulnerable setups through automated methods such as fuzzing. In a vulnerable setup, this could cause damage to the confidentiality and integrity of the server. The problem has been patched in Kirby 3.9.8.3, Kirby 3.10.1.2, and Kirby 4.7.1. In all of the mentioned releases, the maintainers of Kirby have added a check for the collection path that ensures that the resulting path is contained within the configured collections root. Collection paths that point outside of the collections root will not be loaded.
総合評価: CVE-2025-31493 は低リスク（37.9/100）。CVSS 深刻度は中。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: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
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。
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 | 0.77% | 0.48% | -0.29% |
| 2 | 2026-03-09 | 0.18% | 0.77% | +0.59% |
| 3 | 2026-01-27 | — | 0.18% | — |
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 |
|---|---|---|---|---|---|---|
| 6.3 | 4.0 | MEDIUM |
|
— | — | [email protected] |
| 9.1 | 3.1 | CRITICAL |
|
3.9 | 5.2 | [email protected] |
GHSA-x275-h9j4-7p4h · 深刻度： medium · エコシステム： composer — Kirby vulnerable to path traversal of collection names during file system lookup
| URL | タグ |
|---|---|
| https://github.com/getkirby/kirby/releases/tag/3.10.1.2 | Release Notes |
| https://github.com/getkirby/kirby/releases/tag/3.9.8.3 | Release Notes |
| https://github.com/getkirby/kirby/releases/tag/4.7.1 | Release Notes |
| https://github.com/getkirby/kirby/security/advisories/GHSA-x275-h9j4-7p4h | Vendor Advisory |