CVE-2026-9708— 未验证Webhook所有者导致的用户归属漏洞
Possible ATT&CK Techniques 1AI
T1134 · Access Token Manipulation新しい脆弱性情報の通知を購読するログインして購読
I. CVE-2026-9708の基本情報
脆弱性情報
脆弱性についてご質問がありますか？Shenlongの分析が参考になるかご確認ください！
Shenlongの10の質問を表示 ↗ 高度な大規模言語モデル技術を使用していますが、出力には不正確または古い情報が含まれる可能性があります。Shenlongはデータの正確性を確保するよう努めていますが、実際の状況に基づいて検証・判断してください。
脆弱性タイトル
Incoming webhook user attribution via unvalidated webhook owner
ソース: NVD (National Vulnerability Database)
脆弱性説明
Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4, 10.11.x <= 10.11.19 fail to validate that an assigned incoming webhook user has access to the target team or channel, which allows a requester with webhook management permissions to create posts or direct messages attributed to another user via crafted incoming webhook configuration and payloads.. Mattermost Advisory ID: MMSA-2026-00683
ソース: NVD (National Vulnerability Database)
CVSS情報
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
ソース: NVD (National Vulnerability Database)
脆弱性タイプ
通过用户控制密钥绕过授权机制
ソース: NVD (National Vulnerability Database)
影響を受ける製品
| ベンダー | プロダクト | 影響を受けるバージョン | CPE | 購読 |
|---|---|---|---|---|
| Mattermost | Mattermost | 11.7.0 ~ 11.7.2 | - |
II. CVE-2026-9708の公開POC
| # | POC説明 | ソースリンク | Shenlongリンク |
|---|
AI生成POCプレミアム
公開POCは見つかりませんでした。
ログインしてAI POCを生成III. CVE-2026-9708のインテリジェンス情報
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Same Patch Batch · Mattermost · 2026-07-13 · 10 CVEs total
| CVE-2026-6850 | 6.5 MEDIUM | Crafted message attachment causes client-side denial of service via markdown parser regex |
| CVE-2026-10106 | 6.5 MEDIUM | Unauthorized users can trigger interactive post actions in private channels via action coo |
| CVE-2026-9571 | 5.9 MEDIUM | Deactivated user accounts can continue to obtain valid OAuth access tokens via refresh tok |
| CVE-2026-9597 | 5.4 MEDIUM | Deactivated guest accounts can authenticate via magic-link token in Mattermost REST API lo |
| CVE-2026-10085 | 5.4 MEDIUM | Ordinary group/direct message member can enable group_constrained and remove all channel p |
| CVE-2026-6541 | 4.3 MEDIUM | Unscoped updates to other playbooks' metric configuration |
| CVE-2026-9824 | 4.3 MEDIUM | Remote cluster metadata enumeration via /share-channel autocomplete |
| CVE-2026-10103 | 4.3 MEDIUM | Authenticated remote cluster can modify or delete posts it does not own in Mattermost Conn |
| CVE-2026-9820 | 3.8 LOW | Mattermost schemes teams endpoint exposes private team invite IDs |
IV. 関連脆弱性
同じ製品: Mattermost
- CVE-2026-6541
Unscoped updates to other playbooks' metric configuration - CVE-2026-9820
Mattermost schemes teams endpoint exposes private team invit - CVE-2026-9824
Remote cluster metadata enumeration via /share-channel autoc - CVE-2026-9597
Deactivated guest accounts can authenticate via magic-link t - CVE-2026-6850
Crafted message attachment causes client-side denial of serv
同じベンダー: Mattermost
- CVE-2026-6541
Unscoped updates to other playbooks' metric configuration - CVE-2026-9820
Mattermost schemes teams endpoint exposes private team invit - CVE-2026-9824
Remote cluster metadata enumeration via /share-channel autoc - CVE-2026-9597
Deactivated guest accounts can authenticate via magic-link t - CVE-2026-6850
Crafted message attachment causes client-side denial of serv
同じ弱点: CWE-639
- CVE-2026-6541
Unscoped updates to other playbooks' metric configuration - CVE-2026-61971
WordPress User Profile Picture plugin <= 2.6.3 - Insecure Di - CVE-2026-57694
WordPress Tutor LMS plugin <= 3.9.13 - Insecure Direct Objec - CVE-2026-10103
Authenticated remote cluster can modify or delete posts it d - CVE-2026-14165
Authorization Bypass Through User-Controlled Key vulnerabili
V. CVE-2026-9708へのコメント
まだコメントはありません