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CVE-2026-79917— MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user's conversation

一分钟漏洞结论

影响对象
1Panel-dev MaxKB
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

MaxKB is an open-source AI assistant for enterprise. In 2.7.0 through 2.10.4-lts, POST /chat/api/{application_id}/chat/{chat_id}/share_chat verifies that a conversation exists but does not verify that it belongs to the authenticated chat_user_id or to the appl

CVSS 6.5 · Medium EPSS 0.21% · P12
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一、 漏洞 CVE-2026-79917 基础信息

漏洞信息

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Vulnerability Title
MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user's conversation
来源: CVE Program / CVE List V5
Vulnerability Description
MaxKB is an open-source AI assistant for enterprise. In 2.7.0 through 2.10.4-lts, POST /chat/api/{application_id}/chat/{chat_id}/share_chat verifies that a conversation exists but does not verify that it belongs to the authenticated chat_user_id or to the application bound to the caller's token. An attacker with any chat token and a known victim chat_id can create an unauthenticated public ChatShareLink exposing the victim's conversation and can create PublicFileAccess state that makes associated files retrievable without credentials, with no available revoke path. No fixed version is available as of this review.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
1Panel-dev MaxKB >= 2.7.0, <= 2.10.4-lts -

二、漏洞 CVE-2026-79917 的公开POC

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三、漏洞 CVE-2026-79917 的情报信息

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CVE-2026-79917 其他参考 (1)

同批安全公告 · 1Panel-dev · 2026-09-21 · 共 13 条

CVE-2026-77521 10.0 CRITICAL MaxKB: Prompt-injectable agent can lead to command execution
CVE-2026-79916 9.1 CRITICAL MaxKB AWS Bedrock model credential injection leads to remote code execution
CVE-2026-77523 7.4 HIGH MaxKB: Cross-workspace model parameter form write
CVE-2026-79919 6.3 MEDIUM MaxKB function-library sandbox escape: dlopen stack-check bypass via importlib meta-path c
CVE-2026-79918 6.3 MEDIUM MaxKB: Sandbox escape via unhooked fexecve
CVE-2026-77520 5.4 MEDIUM MaxKB: Homepage ranking leaks application IDs that workflow application-nodes can use to i
CVE-2026-77517 5.4 MEDIUM MaxKB cross-knowledge IDOR lets a normal user read and modify documents and paragraphs in
CVE-2026-77516 5.4 MEDIUM MaxKB: Missing per-tool authorization in the agent and workflow tool-dispatch path
CVE-2026-77519 5.4 MEDIUM MaxKB: Expired application API keys remain usable on `/chat/api/mcp`
CVE-2026-77518 5.0 MEDIUM MaxKB: Known MCP tool IDs expose owner Tool.code and can be referenced by attacker workflo
CVE-2026-77522 4.3 MEDIUM MaxKB: Authenticated full-read SSRF via the knowledge web-document import/sync crawler (Fo
CVE-2026-77525 4.2 MEDIUM MaxKB: Management chat-record routes trust path application_id but load ChatRecord by glob

IV. Related Vulnerabilities

Same product: MaxKB
Same vendor: 1Panel-dev
Same weakness: CWE-285

V. Comments for CVE-2026-79917

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