CVE-2019-19806
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 · unedited_account_forgot_password.ajax.php in MFScripts YetiShare 3.5.2 through 4.5.3 displays a message indicating whether an email address is configured for the account name provided. This can be used by an attacker to enumerate accounts by guessing email addresses.
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 confidenceThe forgot password endpoint in _account_forgot_password.ajax.php reveals whether an email address is associated with a given account name by displaying different messages. Attackers can enumerate valid user accounts by submitting email addresses and observing whether the account exists based on the response.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 3.5.2, <= 4.5.3CVSS 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
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 installed YetiShare versionCheck version.php file in the root directory, or look for version strings in includes/functions.php or other core files. Common path: /path/to/yetishare/version.phpAffected if version is greater than or equal to 3.5.2 and less than or equal to 4.5.3
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Locate the forgot password AJAX endpointVerify the existence of account_forgot_password.ajax.php in the /ajax/ or /ajax/account/ directory of your YetiShare installationAffected if the file exists and is accessible via web request
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Test endpoint response for non-existent emailSubmit a POST request to the forgot password endpoint with a clearly invalid email address (e.g., [email protected]) and record the response messageAffected if the endpoint returns a specific error message indicating the email is not found
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Test endpoint response for existing emailSubmit a POST request to the forgot password endpoint with a known-valid email address from your user database and compare the response to the previous testAffected if the response message differs from the non-existent email case, explicitly confirming account existence
Your environment is affected if YetiShare version is between 3.5.2 and 4.5.3 AND the forgot password endpoint reveals different messages for valid versus invalid email addresses, allowing account enumeration.
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 dataUpgrade YetiShare to version 4.5.4 or later, which should implement generic/friendly error messages that do not reveal account existence.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-19806 — 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-2019-19806 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
- No spam, self-promotion, credentials, or personal data