CVE-2023-40754
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 · uneditedIn PHPJabbers Car Rental Script 3.0, lack of verification when changing an email address and/or password (on the Profile Page) allows remote attackers to take over 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 · moderate confidencePHPJabbers Car Rental Script 3.0 contains an IDOR/broken access control vulnerability in the Profile Page that allows unauthenticated or authenticated attackers to modify any user's email address and/or password without proper verification, leading to full account takeover.
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= 3.0CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Verify PHPJabbers Car Rental Script versionLocate the version number in the software installation (typically in an admin dashboard, footer, or configuration file) and confirm it equals 3.0Affected if The installed version is exactly 3.0
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Confirm profile functionality is accessibleCheck if the user Profile Page feature is enabled and accessible in the application (either for end users or admin accounts)Affected if The profile management functionality is active in the environment
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Inspect profile update endpoint authorizationExamine the backend code or behavior of the profile update mechanism to determine if it validates that the authenticated user has rights to modify the specific account being changedAffected if The profile update endpoint lacks proper authorization checks before allowing email or password changes
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Verify password verification requirementTest whether the profile modification process requires the user's current password as verification before allowing changes to email or password fieldsAffected if The system allows email or password changes without requiring current password verification
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Check for user ID parameter manipulationTest if the profile update request accepts or uses a user ID parameter that can be modified to target other users' accountsAffected if The application accepts a user-referencable parameter (such as a user ID) in profile update requests that can be manipulated to alter other users' data
A user is affected if running PHPJabbers Car Rental Script version 3.0 with the profile page feature enabled and the profile update mechanism lacks proper authorization validation and current password verification.
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 and require current password verification before allowing changes to email or password fields; add CSRF protection and validate that the authenticated user has rights to modify the specific account being changed.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 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 $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-40754 — 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-2023-40754 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