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CVE-2026-56779— MaxKB < 2.10.0 - Server-Side Request Forgery via downloadCallbackUrl and download_url Parameters

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.

1Panel-dev MaxKB是1Panel-dev组织开源的一款基于大语言模型和 RAG 的开源知识库问答系统。 1Panel-dev MaxKB 2.10.0之前版本存在服务端请求伪造漏洞，该漏洞源于在工具创建和更新端点中未验证downloadCallbackUrl和download_url参数，可能导致服务端请求伪造攻击。

CVSS 6.4 · Medium EPSS 0.29% · P20

Possible ATT&CK Techniques 1 AI

T1105 · Ingress Tool Transfer

Affected Version Matrix 1

VendorProduct Version RangeStatus
1Panel-dev MaxKB < 2.10.0 affected
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I. Basic Information for CVE-2026-56779

Vulnerability Information
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Vulnerability Title
MaxKB < 2.10.0 - Server-Side Request Forgery via downloadCallbackUrl and download_url Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
MaxKB before 2.10.0 contains a server-side request forgery vulnerability in tool creation and update endpoints that allows authenticated users to make arbitrary server requests by supplying unvalidated downloadCallbackUrl and download_url parameters. Attackers with default workspace USER role can exploit this to access internal network services by providing malicious URLs to the ToolSerializer endpoints.
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:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
1Panel-dev MaxKB 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
1Panel-dev MaxKB是1Panel-dev组织开源的一款基于大语言模型和 RAG 的开源知识库问答系统。 1Panel-dev MaxKB 2.10.0之前版本存在服务端请求伪造漏洞，该漏洞源于在工具创建和更新端点中未验证downloadCallbackUrl和download_url参数，可能导致服务端请求伪造攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
1Panel-dev MaxKB 0 ~ 2.10.0 -

II. Public POCs for CVE-2026-56779

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III. Intelligence Information for CVE-2026-56779

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Patches & Fixes for CVE-2026-56779 (1)

Vendor Advisories for CVE-2026-56779 (1)

Proof of Concept for CVE-2026-56779 (1)

IV. Related Vulnerabilities

Same product: MaxKB
Same vendor: 1Panel-dev
Same weakness: CWE-918

V. Comments for CVE-2026-56779

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