CVE-2023-40757
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 · uneditedUser enumeration is found in PHPJabbers Food Delivery Script v3.1. This issue occurs during password recovery, where a difference in messages could allow an attacker to determine if the user is valid or not, enabling a brute force attack with valid users.
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 confidenceIn PHPJabbers Food Delivery Script v3.1, the password recovery function reveals different error messages for valid versus invalid usernames/emails. An attacker can submit recovery requests and observe whether the system indicates the user exists or not, enabling user enumeration and subsequent brute force attacks.
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= 3.1CVSS 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:3.1/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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Confirm PHPJabbers Food Delivery Script installationLocate the application on your web server and identify the installed version by checking changelog, readme files, or the admin dashboard for version information. Compare your version to the affected range (3.1).Affected if The application is running version 3.1 of PHPJabbers Food Delivery Script
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Locate the password recovery functionAccess the login page of the Food Delivery Script and identify the password recovery or 'Forgot Password' link. This is typically found on the user login page.Affected if The password recovery function exists and is accessible on the login page
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Test with an invalid/non-existent emailSubmit a password recovery request using an email address that you can confirm does NOT exist in your system. Observe the exact error message or response displayed to the user.Affected if A specific error message is returned indicating the email/user does not exist in the system
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Test with a valid registered emailSubmit a password recovery request using an email address that you KNOW is registered in your system. Observe the exact error message or response displayed.Affected if A different error message is returned indicating the user exists, or a confirmation is shown that a recovery email was sent
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Compare response messagesCompare the messages from steps 3 and 4. If the responses differ in a way that reveals whether the submitted email/user exists in the system, the vulnerability is present.Affected if The system returns measurably different messages for valid versus invalid usernames/emails in password recovery
A user is affected if they are running version 3.1 of PHPJabbers Food Delivery Script and the password recovery function returns distinct messages that reveal whether a particular username or email is registered in the system.
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 dataModify the password recovery mechanism to return a uniform, generic response (e.g., 'If an account matches this email, a recovery link has been sent') regardless of whether the provided username/email exists in the system.
- Consultation2.0 h
- Implementation3.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-40757 — 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-2023-40757 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