Ui LibraryApplication · Yahoo

CVE-2007-2385

MEDIUM · 5.0 CVSS v2.0 Published 2007-04-30
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
59/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

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 · unedited
The Yahoo! UI framework exchanges data using JavaScript Object Notation (JSON) without an associated protection scheme, which allows remote attackers to obtain the data via a web page that retrieves the data through a URL in the SRC attribute of a SCRIPT element and captures the data using other JavaScript code, aka "JavaScript Hijacking."

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 confidence

The Yahoo! UI framework returns JSON data without proper protection mechanisms (missing Content-Type headers, no anti-CSRF tokens, no callback wrappers). Attackers can exploit this by embedding a SCRIPT tag pointing to the JSON endpoint on a malicious page, allowing the browser to execute the returned JSON as JavaScript and exfiltrate the data to attacker-controlled servers.

MitigationImplement proper Content-Type: application/json headers, use JSON with callback wrappers (JSONP), add anti-CSRF tokens for state-changing operations, and ensure sensitive JSON endpoints require authentication and same-origin constraints.

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
Ui LibraryApplication
Affected:all versions

CVSS 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
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Yahoo UI Library in use
    Search your codebase, dependencies, or deployed files for 'yui', 'yahoo ui', or the specific Yahoo UI Library JavaScript files (such as yahoo.js, json.js, or connection.js)
    Affected if The Yahoo UI Library is found in your environment - all versions are affected by this vulnerability
  2. Inventory JSON-producing endpoints
    Review your application for endpoints that return JSON data, particularly those that utilize the Yahoo UI Library's JSON handling or connection utilities
    Affected if JSON endpoints exist that were built with or depend on the Yahoo UI Library's JSON functionality
  3. Inspect JSON response headers
    Make a request to your JSON endpoints and examine the HTTP response headers, specifically looking for the Content-Type header value
    Affected if The Content-Type header is missing, set to text/plain, or set to a non-application/json value - this allows browsers to execute the response as JavaScript
  4. Verify cross-origin JSON accessibility
    Test whether your JSON endpoints can be accessed via a SCRIPT tag from a different origin (or check if the Same-Origin Policy is enforced and if JSONP callbacks are enabled)
    Affected if JSON data can be loaded via SCRIPT tag from a different origin, or JSONP callbacks (wrappers) are present without proper origin validation

If your environment uses the Yahoo UI Library and exposes JSON endpoints that lack proper Content-Type: application/json headers and can be accessed cross-origin via SCRIPT tags, you are affected by this vulnerability.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Implement proper Content-Type: application/json headers, use JSON with callback wrappers (JSONP), add anti-CSRF tokens for state-changing operations, and ensure sensitive JSON endpoints require authentication and same-origin constraints.

Fix this in Ui Library Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,980
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2007-2385 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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