CVE-2026-7679
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA security flaw in YunaiV yudao-cloud (up to 2026.01) exists in the getAccessToken function within OAuth2TokenServiceImpl.java, allowing remote attackers to achieve improper authentication. The vulnerability has public exploit availability and the vendor failed to respond to disclosure attempts.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Confirm yudao-cloud is deployedIdentify if the YunaiV yudao-cloud application is running in your environment by checking application manifests, container images, or dependency lists for the yudao-cloud componentAffected if yudao-cloud is present in your environment
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Check installed version against affected rangeLocate the yudao-cloud version identifier in your deployment configuration, build files, or running application metadata, then compare it to the affected version range (up to and including 2026.01)Affected if the installed version is 2026.01 or any version prior to 2026.01
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Verify OAuth2 module is in useInspect your application configuration to determine whether the OAuth2 authentication module (OAuth2TokenServiceImpl) is enabled or configured, as the flaw exists within this componentAffected if OAuth2 authentication is enabled or the OAuth2 module is configured in your deployment
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Assess network exposure of OAuth2 endpointsReview network accessibility of the OAuth2 token endpoints (the getAccessToken function endpoint) to determine if they are reachable from untrusted networksAffected if OAuth2 endpoints are exposed to the internet or untrusted internal networks
Your environment is affected if you are running yudao-cloud version 2026.01 or earlier with the OAuth2 module enabled and the token endpoint is network-accessible.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataOrganizations using yudao-cloud should immediately restrict network exposure of affected OAuth2 endpoints, implement additional authentication guards at the application gateway level, and await an official patch while monitoring for indicators of compromise.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-7679 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-7679 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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