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CVE-2026-7679— YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication

Quick assessment

Affected
YunaiV yudao-cloud
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.

yudao-cloud是YunaiV个人开发者的一个后台管理系统。 yudao-cloud 2026.01及之前版本存在授权问题漏洞，该漏洞源于文件yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java的函数getAccessToken，可能导致身份验证不当。

CVSS 7.3 · High EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
YunaiV yudao-cloud 2026.01 affected
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I. Basic Information for CVE-2026-7679

Vulnerability Information
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Vulnerability Title
YunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in YunaiV yudao-cloud up to 2026.01. This impacts the function getAccessToken of the file yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java. Performing a manipulation results in improper authentication. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
yudao-cloud 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
yudao-cloud是YunaiV个人开发者的一个后台管理系统。 yudao-cloud 2026.01及之前版本存在授权问题漏洞，该漏洞源于文件yudao-module-system-biz/src/main/java/io/github/ruoyi/common/oauth2/service/impl/OAuth2TokenServiceImpl.java的函数getAccessToken，可能导致身份验证不当。
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
YunaiV yudao-cloud 2026.01 -

II. Public POCs for CVE-2026-7679

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III. Intelligence Information for CVE-2026-7679

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News Coverage for CVE-2026-7679 (1)

Same Patch Batch · YunaiV · 2026-05-03 · 3 CVEs total

CVE-2026-7710 7.3 HIGH YunaiV yudao-cloud Ruoyi-Vue-Pro JwtAuthenticationTokenFilter.java doFilterInternal improp
CVE-2026-7678 6.3 MEDIUM YunaiV yudao-cloud GoViewDataServiceImpl.java getDataBySQL sql injection

IV. Related Vulnerabilities

Same product: yudao-cloud
Same vendor: YunaiV
Same weakness: CWE-287

V. Comments for CVE-2026-7679

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