CVE-2006-4499
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 · uneditedModernBill 5.0.4 and earlier uses cURL with insecure settings for CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST that do not verify SSL certificates, which allows remote attackers to read network traffic via a man-in-the-middle (MITM) attack.
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 confidenceModernBill 5.0.4 and earlier uses cURL with CURLOPT_SSL_VERIFYPEER and CURLOPT_SSL_VERIFYHOST disabled, disabling SSL certificate verification. This allows man-in-the-middle attackers to intercept and read sensitive network traffic by impersonating the server.
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<= 5.0.4CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/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 ModernBill installationSearch for ModernBill files in your web directory, typically in /var/www/html/ or similar document root paths. Look for directories or files named 'modernbill' or 'ModernBill'.Affected if ModernBill software is present on the server
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Determine ModernBill versionCheck for a version file or script within the ModernBill installation. Common locations include a 'version.php' file or the main index file containing a version string. Compare the version number to 5.0.4.Affected if Installed version is 5.0.4 or earlier
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Locate cURL implementation codeSearch the ModernBill source files for 'curl_init' function calls. In Linux, use: grep -r "curl_init" /path/to/modernbill/Affected if cURL is used within the ModernBill codebase
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Check SSL verification settings in cURL callsSearch for curl_setopt calls that set CURLOPT_SSL_VERIFYPEER or CURLOPT_SSL_VERIFYHOST to 0, false, or disable these settings. Use: grep -r "CURLOPT_SSL_VERIFYPEER" /path/to/modernbill/Affected if CURLOPT_SSL_VERIFYPEER is set to 0, false, or disabled, OR CURLOPT_SSL_VERIFYHOST is set to 0
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Review PHP curl configurationCreate a PHP info file (<?php phpinfo(); ?>) and access it via browser, then search for 'curl' section. Check if default curl settings enforce SSL verification.Affected if cURL defaults allow insecure connections or SSL verification is programmatically disabled in the code
A system is affected if it runs ModernBill version 5.0.4 or earlier AND contains cURL code that disables CURLOPT_SSL_VERIFYPEER or CURLOPT_SSL_VERIFYHOST, allowing unverified SSL connections.
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 dataEnable SSL certificate verification by setting CURLOPT_SSL_VERIFYPEER to true (or 1) and CURLOPT_SSL_VERIFYHOST to 2 in all cURL requests, and ensure proper TLS/SSL configuration.
- Consultation2.0 h
- Implementation2.0 h
- Testing3.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2006-4499 — 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-2006-4499 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