CVE-2019-12161
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 · uneditedWPO WebPageTest 19.04 allows SSRF because ValidateURL in www/runtest.php does not consider octal encoding of IP addresses (such as 0300.0250 as a replacement for 192.168).
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 confidenceWebPageTest 19.04 contains a Server-Side Request Forgery (SSRF) vulnerability in the ValidateURL function within www/runtest.php. The function fails to properly sanitize octal-encoded IP addresses (e.g., 0300.0250 representing 192.168), allowing attackers to bypass validation and make the server request arbitrary URLs including internal resources.
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= 19.04CVSS 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:3.0/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 WebPageTest versionLocate the version identifier in your WebPageTest installation (check version file, about page, or HTTP headers/response from the server)Affected if The installed version is exactly 19.04 (no patches applied)
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Confirm www/runtest.php existsCheck if the file www/runtest.php is present in the WebPageTest web directory and is accessible via HTTPAffected if The file exists and is web-accessible
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Inspect ValidateURL functionOpen www/runtest.php and locate the ValidateURL function. Look for IP validation logic that does not handle octal-encoded IP addresses (e.g., 0300.0250)Affected if The ValidateURL function lacks proper sanitization of octal IP encodings
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Check URL testing feature exposureDetermine if the runtest.php endpoint accepts user-supplied URLs for testing (the SSRF attack vector)Affected if The endpoint accepts arbitrary URLs without strict validation
You are affected if running WebPageTest version 19.04 with the vulnerable ValidateURL function in www/runtest.php exposed and accepting URL inputs without proper octal IP sanitization.
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 to a patched version of WebPageTest that properly validates and normalizes IP addresses before making requests, rejecting octal and other non-standard IP encodings.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-12161 — 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-2019-12161 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
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