GHSA-67c6-q4j4-hccg · 深刻度： high · エコシステム： composer — Flarum vulnerable to LFI and Blind SSRF via Avatar upload
Flarum is an open source forum software. Flarum is affected by a vulnerability that allows an attacker to conduct a Blind Server-Side Request Forgery (SSRF) attack or disclose any file on the server, even with a basic user account on any Flarum forum. By uploading a file containing a URL and spoofing the MIME type, an attacker can manipulate the application to execute unintended actions. The vulnerability is due to the behavior of the `intervention/image` package, which attempts to interpret the supplied file contents as a URL, which then fetches its contents. This allows an attacker to exploit the vulnerability to perform SSRF attacks, disclose local file contents, or conduct a blind oracle attack. This has been patched in Flarum version 1.8.0. Users are advised to upgrade. Users unable to upgrade may disable PHP's `allow_url_fopen` which will prevent the fetching of external files via URLs as a temporary workaround for the SSRF aspect of the vulnerability.
総合評価: CVE-2023-40033 は中リスク（40.3/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.42%、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 | 0.18% | 0.42% | +0.24% |
| 2 | 2025-03-30 | 0.30% | 0.18% | -0.12% |
| 3 | 2025-03-29 | — | 0.30% | — |
EPSS の全履歴 （全 6 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 |
|
2.8 | 4.2 | [email protected] |
| 7.1 | 3.1 | HIGH |
|
2.8 | 4.2 | [email protected] |
GHSA-67c6-q4j4-hccg · 深刻度： high · エコシステム： composer — Flarum vulnerable to LFI and Blind SSRF via Avatar upload