GHSA-mqqg-xjhj-wfgw · 深刻度： medium · エコシステム： go — Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler
Miniflux is a feed reader. Since v2.0.25, Miniflux will automatically proxy images served over HTTP to prevent mixed content errors. When an outbound request made by the Go HTTP client fails, the `html.ServerError` is returned unescaped without the expected Content Security Policy header added to valid responses. By creating an RSS feed item with the inline description containing an `<img>` tag with a `srcset` attribute pointing to an invalid URL like `http:a<script>alert(1)</script>`, we can coerce the proxy handler into an error condition where the invalid URL is returned unescaped and in full. This results in JavaScript execution on the Miniflux instance as soon as the user is convinced (e.g. by a message in the alt text) to open the broken image. An attacker can execute arbitrary JavaScript in the context of a victim Miniflux user when they open a broken image in a crafted RSS feed. This can be used to perform actions on the Miniflux instance as that user and gain administrative access to the Miniflux instance if it is reachable and the victim is an administrator. A patch is available in version 2.0.43. As a workaround sisable image proxy; default value is `http-only`.
総合評価: CVE-2023-27592 は中リスク（42.9/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.57%、68 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 | 2026-03-22 | 0.78% | 0.57% | -0.21% |
| 2 | 2026-03-19 | 0.73% | 0.78% | +0.05% |
| 3 | 2026-03-18 | — | 0.73% | — |
EPSS の全履歴 （全 10 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 |
|---|---|---|---|---|---|---|
| 4.8 | 3.1 | MEDIUM |
|
1.2 | 3.6 | [email protected] |
| 5.4 | 3.1 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
GHSA-mqqg-xjhj-wfgw · 深刻度： medium · エコシステム： go — Stored XSS in Miniflux when opening a broken image due to unescaped ServerError in proxy handler
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2023-27592: 1 source package rows (miniflux); 1 state rows across 1 repos (3.17-community); fixed 1, open 0. | https://security.alpinelinux.org/vuln/CVE-2023-27592 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| miniflux_project | miniflux | >= 2.0.25, < 2.0.43 | cpe:2.3:a:miniflux_project:miniflux:*:*:*:*:*:go:*:* |