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CVE-2026-79786— Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration

Quick assessment

Affected
coroot coroot
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Coroot 的未认证 MCP OAuth 动态客户端注册端点在接收重定向 URI 时，仅进行语法有效性校验，而未进行任何安全验证。攻击者可利用此漏洞注册指向其控制的恶意主机的客户端。随后，攻击者可向已登录用户发送伪造的授权 URL，在用户授权同意后捕获授权码，并将其兑换为访问令牌，从而劫持 MCP 会话。

CVSS 7.1 · High

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
coroot coroot 1.20.2≤ 1.24.5 affected
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I. Basic Information for CVE-2026-79786

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration
Source: CVE Program / CVE List V5
Vulnerability Description
Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
coroot coroot 1.20.2 ~ 1.24.5 -

II. Public POCs for CVE-2026-79786

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11173 chars
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III. Intelligence Information for CVE-2026-79786

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Vendor Advisories for CVE-2026-79786 (2)

Other References for CVE-2026-79786 (1)

IV. Related Vulnerabilities

Same weakness: CWE-601

V. Comments for CVE-2026-79786

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