CVE-2026-3020
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 · uneditedIdentity based authorization bypass vulnerability (IDOR) that allows an attacker to modify the data of a legitimate user account, such as changing the victim's email address, validating the new email address, and requesting a new password. This could allow them to take complete control of other users' legitimate accounts
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 · high confidenceThis is an Insecure Direct Object Reference (IDOR) vulnerability allowing unauthorized modification of user account data through direct object references without proper authorization. An attacker can change a victim's email address, validate the new email, and request a password reset to achieve complete account takeover.
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
- Low
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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
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 user data modification endpointsReview application source code or API documentation to locate endpoints that handle email address changes, password reset requests, and other sensitive user profile modifications. Look for HTTP endpoints accepting user identifiers in the request path or body.Affected if The application lacks explicit authorization checks on endpoints that modify user account data
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Verify authorization on email change endpointsExamine the code or intercept HTTP requests for email modification functionality. Trace the logic to confirm the endpoint validates that the authenticated user owns or has permission to modify the target user account before processing the request.Affected if The application allows changing email addresses without verifying the requester owns the target account
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Check for direct object references in requestsInspect HTTP requests for user data modification operations. Look for patterns where user identifiers (user IDs, email addresses, account numbers) are passed directly as parameters without additional ownership verification beyond session authentication.Affected if The application relies solely on session cookies without validating object ownership for sensitive modifications
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Inspect re-authentication for sensitive operationsExamine whether the application requires additional authentication (such as current password entry, MFA verification, or separate confirmation) before processing email changes or password reset requests.Affected if Sensitive operations like email changes or password resets do not require re-authentication beyond initial login
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Test cross-user data modification capabilityLog in as one user account and attempt to modify another user's email address or profile data by manipulating user identifiers in API requests or form submissions.Affected if An authenticated user can successfully modify another user's account data without proper authorization
The environment is affected if user data modification endpoints accept direct object references without verifying the authenticated user has permission to modify the target resource.
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 dataImplement proper authorization checks on all user data modification endpoints to verify the authenticated user owns or has permission to modify the target resource, and require re-authentication for sensitive operations like email changes and password reset requests.
- Consultation6.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-3020 — 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-2026-3020 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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