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CVE-2026-67345— MaxKey 4.1.12 DefaultRedirectResolver OAuth Authorization Code Theft

Quick assessment

Affected
dromara MaxKey
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.

Dromara MaxKey是中国Dromara组织的单点登录系统。 dromara Overview 4.1.12及之前版本存在输入验证错误漏洞，该漏洞源于DefaultRedirectResolver.hostMatches()方法中重定向URI验证不足，攻击者可通过提供特制的redirect_uri劫持OAuth 2.0授权码。

CVSS 8.1 · High EPSS 0.56% · P47

Possible ATT&CK Techniques 1 AI

T1556 · Modify Authentication Process

Affected Version Matrix 2

VendorProduct Version RangeStatus
dromara MaxKey ≤ 4.1.12 affected
ddbb72fb24ab8e66aa422fb14b1177330bcffb45 unaffected
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I. Basic Information for CVE-2026-67345

Vulnerability Information
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Vulnerability Title
MaxKey 4.1.12 DefaultRedirectResolver OAuth Authorization Code Theft
Source: CVE Program / CVE List V5
Vulnerability Description
MaxKey through 4.1.12, fixed in commit ddbb72f, contains an insufficient redirect URI validation vulnerability in DefaultRedirectResolver.hostMatches() that allows remote attackers to hijack OAuth 2.0 authorization codes by supplying a crafted redirect_uri whose hostname suffix matches a registered URI without proper dot-boundary anchoring. Attackers who control a domain ending with the registered redirect URI hostname can social-engineer victims into clicking a crafted authorization URL, causing the authorization code to be issued to the attacker-controlled URI and exchanged for an access token granting access to the victim's identity.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
宽松定义的白名单
Source: CVE Program / CVE List V5
Vulnerability Title
dromara Overview 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dromara MaxKey是中国Dromara组织的单点登录系统。 dromara Overview 4.1.12及之前版本存在输入验证错误漏洞，该漏洞源于DefaultRedirectResolver.hostMatches()方法中重定向URI验证不足，攻击者可通过提供特制的redirect_uri劫持OAuth 2.0授权码。
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
dromara MaxKey 0 ~ 4.1.12 -

II. Public POCs for CVE-2026-67345

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 13375 chars
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III. Intelligence Information for CVE-2026-67345

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Patches & Fixes for CVE-2026-67345 (1)

Vendor Advisories for CVE-2026-67345 (1)

Other References for CVE-2026-67345 (1)

IV. Related Vulnerabilities

Same product: MaxKey
Same vendor: dromara
Same weakness: CWE-183