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CVE-2026-77523— MaxKB: Cross-workspace model parameter form write

Quick assessment

Affected
1Panel-dev MaxKB
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MaxKB is an open-source AI assistant for enterprise. In version 2.10.3-lts and earlier, the model parameter form route authorizes the path workspace but ModelSerializer.ModelParams loads and saves a Model by id alone without including workspace_id in the query

CVSS 7.4 · High EPSS 0.19% · P9

Affected Version Matrix 1

VendorProduct Version RangeStatus
1Panel-dev MaxKB <= 2.10.3-lts affected
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I. Basic Information for CVE-2026-77523

Vulnerability Information

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Vulnerability Title
MaxKB: Cross-workspace model parameter form write
Source: CVE Program / CVE List V5
Vulnerability Description
MaxKB is an open-source AI assistant for enterprise. In version 2.10.3-lts and earlier, the model parameter form route authorizes the path workspace but ModelSerializer.ModelParams loads and saves a Model by id alone without including workspace_id in the query. An authenticated user with model read permission in an attacker-controlled workspace can supply a known victim model_id to read or overwrite the victim's model_params_form in another workspace, potentially altering workflows that use those defaults. No fixed version is available as of this review.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
1Panel-dev MaxKB <= 2.10.3-lts -

II. Public POCs for CVE-2026-77523

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III. Intelligence Information for CVE-2026-77523

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Other References for CVE-2026-77523 (1)

Same Patch Batch · 1Panel-dev · 2026-09-21 · 13 CVEs total

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-2026-79917 6.5 MEDIUM MaxKB: Chat share-link endpoint missing owner check: a chat token can publish another user
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-639

V. Comments for CVE-2026-77523

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