CVE-2023-40763
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 Taxi Booking Script v2.0. 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 confidenceUser enumeration vulnerability in PHPJabbers Taxi Booking Script v2.0's password recovery function allows attackers to distinguish between valid and invalid usernames by analyzing differences in error messages, facilitating targeted 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= 2.0CVSS 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 Taxi Booking Script installationLocate the web application root directory and identify if the files belong to PHPJabbers Taxi Booking Script by checking for characteristic files such as index.php, configuration files, or branding elements specific to this productAffected if The application is not PHPJabbers Taxi Booking Script, the vulnerability does not apply
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Check installed versionExamine the version information in the application, typically found in a version file, admin panel, or footer/signature files within the application rootAffected if The version is not exactly 2.0 - only version 2.0 is affected by this CVE
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Verify password recovery module is enabledAccess the password recovery functionality at the login page or password recovery URL endpoint, typically /index.php?controller=pjActionForgot or similar route, and confirm the feature is accessible to end usersAffected if The password recovery function is disabled or not accessible to unauthenticated users, the attack surface does not exist
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Inspect password recovery error handling codeLocate the controller file handling password recovery requests (typically in the controllers directory) and examine the response logic for valid versus invalid username inputs - look for conditional error messages that differ based on username validityAffected if The application returns distinguishable error messages for valid vs invalid usernames during password recovery (e.g., 'Username does not exist' vs 'If the username exists, an email has been sent')
The environment is affected if PHPJabbers Taxi Booking Script version 2.0 is installed with the password recovery feature enabled and the application returns different error messages for valid versus invalid usernames.
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 uniform error messages for both valid and invalid usernames during password recovery to prevent user enumeration.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,848.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-40763 — 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-2023-40763 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