CVE-2026-7167
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 · uneditedThe vulnerability arises when the system fails to properly validate the 'email' field during the authentication process, allowing unverified or fake email addresses to be accepted. This lack of validation enables the creation of user accounts with fake email addresses, facilitating the mass creation of fraudulent accounts. Successful exploitation of this vulnerability could allow an authenticated attacker to carry out various attacks, such as mass spam distribution, system abuse, or bypassing user controls, thereby compromising the security and integrity of the system.
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 application fails to validate email address format and authenticity during user registration or authentication, allowing attackers to submit arbitrary strings as email addresses. This enables mass creation of fraudulent accounts that can be leveraged for spam distribution and system abuse.
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
- Authentication
- X
- User interaction
- None
- Scope
- X
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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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Test registration endpoint with malformed email addressesSubmit a registration request using non-email strings such as 'test', 'test@', '@test.com', 'test@invalid', or strings containing special characters. Observe whether the application accepts the submission without rejecting it.Affected if The application accepts malformed email strings and creates an account without returning validation errors.
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Inspect email validation code in the registration moduleReview the backend code responsible for user registration or authentication. Locate any functions or methods that process the email input field and check for validation logic (e.g., regex patterns, format checking functions).Affected if No email format validation code exists, or the validation function is missing, commented out, or bypassed.
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Check for email verification configurationExamine application configuration files, settings, or database tables related to user account verification. Determine whether email verification (sending confirmation links) is enabled or enforced.Affected if Email verification is disabled or optional and not enforced upon registration.
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Review input validation libraries or middlewareLook at the application's dependencies, libraries, or middleware that handle input validation. Identify whether a dedicated email validation library is in use and whether it is properly invoked during registration.Affected if No email-specific validation library is integrated into the registration flow.
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Audit existing user accounts for invalid email patternsQuery the user database or user table for accounts with email addresses that do not conform to standard format (missing @ symbol, missing domain, contains spaces, uses IP addresses instead of domains).Affected if The database contains multiple user accounts with malformed or obviously fake email addresses.
Your environment is affected if the registration endpoint accepts arbitrary strings as email input without validation and does not enforce email verification for new accounts.
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 robust email validation including format verification (RFC-compliant regex) and optionally email verification through confirmation links or DNS MX record checks to ensure provided addresses are legitimate.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-7167 — 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-2026-7167 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data