CVE-2026-48611
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 · uneditedImproper authentication checks in the OAuth implementation allow account hijacking even when OAuth is not configured or enabled leading to unauthorized access in default installations.
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 confidenceThe vulnerability involves improper authentication checks within the OAuth implementation module that can be exploited to hijack user accounts. The critical flaw allows unauthorized access even when OAuth itself is not configured or enabled, affecting default installations. This suggests the authentication logic contains flaws in code paths that execute regardless of OAuth feature toggles.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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Identify the OAuth implementation moduleLocate the authentication module or library that handles OAuth functionality in your application. Search for files or components named oauth, oauth2, or authentication that contain OAuth-related code.Affected if Your application includes OAuth authentication code in its authentication module regardless of whether OAuth is configured or enabled.
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Verify if the authentication logic runs without OAuth enabledTest or inspect authentication code paths to determine whether authentication checks execute even when OAuth feature flags or configuration are disabled. Review the code flow for authentication requests.Affected if Authentication logic in your system executes OAuth-related code paths even when OAuth is explicitly disabled or not configured.
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Inspect default installation stateCheck fresh or default installations of your software to see if the OAuth authentication module is present and loaded by default, without requiring explicit configuration.Affected if Your default installation includes OAuth authentication code that is active without any configuration changes.
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Review authentication logs for unauthorized accessExamine authentication logs for successful account access attempts that do not correspond to legitimate OAuth flows, password logins, or known authentication methods.Affected if Logs show account access events occurring through unexpected authentication paths that may indicate exploitation of this flaw.
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Compare your installed version against the affected rangeDetermine the exact version of your software and compare it to any version range mentioned in CVE databases or vendor advisories for CVE-2026-48611.Affected if Your software version falls within the range affected by this vulnerability.
Your environment is likely affected if the application contains OAuth authentication code that executes in authentication code paths regardless of OAuth configuration, which is common in default installations.
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 should apply vendor patches immediately and disable the OAuth functionality at the application level until patches are applied, while also reviewing authentication logs for suspicious account access patterns.
- Consultation6.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA6.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-48611 — 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-2026-48611 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
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