EUVD-2026-86444
GHSA-g4j9-5c7x-m38w
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Remote and unauthenticated (AV:N/PR:N) but requires a victim to follow the crafted link (UI:R); open redirect yields only a low integrity impact with no confidentiality or availability effect.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
3DescriptionCVE.org
A security flaw has been discovered in YunaiV/zhijiantianya ruoyi-vue-pro up to 2026.08. Affected by this vulnerability is the function validOAuthClientFromCache of the file yudao-module-system/src/main/java/cn/iocoder/yudao/module/system/service/oauth2/OAuth2ClientServiceImpl.java of the component OAuth2 Client. The manipulation of the argument redirect_uri results in open redirect. The attack can be launched 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.
AnalysisAI
Open redirect in the Yudao (ruoyi-vue-pro) OAuth2 client component, affecting releases up to 2026.08, lets remote attackers manipulate the redirect_uri argument handled by validOAuthClientFromCache in OAuth2ClientServiceImpl.java so that a victim is bounced to an attacker-controlled site after clearing the authorization flow. No authentication is required (CVSS:4.0 PR:N), but the attack is not autonomous - it needs a victim to click a crafted authorization link and complete the flow (UI:P), and impact is limited to integrity-only redirection with no data disclosure or code execution. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires reaching the OAuth2 Client authorization flow that calls validOAuthClientFromCache and supplying an attacker-chosen redirect_uri that the application fails to validate against an allowlist. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are consistent and point to a genuine-but-modest issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch identified at time of analysis - the vendor (YunaiV/zhijiantianya) was contacted early about this disclosure and did not respond, and no fixed version is published in any of the available references, so upgrading alone is not an option today. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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