GHSA-r9x7-7ggj-fx9f · 深刻度： low · エコシステム： composer — PrivateBin vulnerable to malicious filename use for self-XSS / HTML injection locally for users
PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Starting in version 1.7.7 and prior to version 2.0.3, dragging a file whose filename contains HTML is reflected verbatim into the page via the drag-and-drop helper, so any user who drops a crafted file on PrivateBin will execute arbitrary JavaScript within their own session (self-XSS). This allows an attacker who can entice a victim to drag or otherwise attach such a file to exfiltrate plaintext, encryption keys, or stored pastes before they are encrypted or sent. Certain conditions must exist for the vulnerability to be exploitable. Only macOS or Linux users are affected, due to the way the `>` character is treated in a file name on Windows. The PrivateBin instance needs to have file upload enabled. An attacker needs to have access to the local file system or somehow convince the user to create (or download) a malicious file (name). An attacker needs to convince the user to attach that malicious file to PrivateBin. Any Mac / Linux user who can be tricked into dragging a maliciously named file into the editor is impacted; code runs in the origin of the PrivateBin instance they are using. Attackers can steal plaintext, passphrases, or manipulate the UI before data is encrypted, defeating the zero-knowledge guarantees for that victim session, assuming counter-measures like Content-Security-Policy (CSP) have been disabled. If CSP is not disabled, HTML injection attacks may be possible - like redirecting to a foreign website, phishing etc. As the whole exploit needs to be included in the file name of the attached file and only affects the local session of the user (aka it is neither persistent nor remotely executable) and that user needs to interact and actively attach that file to the paste, the impact is considered to be practically low. Version 2.0.3 patches the issue.
総合評価: CVE-2025-64711 は公開エクスプロイトあり（50/100）。CVSS 深刻度は低。悪用される可能性が高い（EPSS 0.11%、1 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 | 0.01% | 0.11% | +0.10% |
| 2 | 2025-11-13 | — | 0.01% | — |
EPSS の全履歴 （全 2 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 |
|---|---|---|---|---|---|---|
| 3.9 | 3.1 | LOW |
|
1.3 | 2.5 | [email protected] |
| 5.4 | 3.1 | MEDIUM |
|
2.3 | 2.7 | [email protected] |
GHSA-r9x7-7ggj-fx9f · 深刻度： low · エコシステム： composer — PrivateBin vulnerable to malicious filename use for self-XSS / HTML injection locally for users
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| privatebin | privatebin | >= 1.7.7, < 2.0.3 | cpe:2.3:a:privatebin:privatebin:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://github.com/PrivateBin/PrivateBin/commit/f9550e513381208b36595ee2404e968144bba78b | Patch |
| https://github.com/PrivateBin/PrivateBin/security/advisories/GHSA-r9x7-7ggj-fx9f | Exploit Mitigation Vendor Advisory |