dbcve.org
Easy Digital DownloadsWordPress extension · Awesomemotive

CVE-2015-9534

MEDIUM · 6.1 CVSS v3.1 Published 2019-10-23
Fix available
A fix is available. Upgrade to 1.8.7 / 1.9.10 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges

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 Easy Digital Downloads (EDD) Quota theme for WordPress, as used with EDD 1.8.x before 1.8.7, 1.9.x before 1.9.10, 2.0.x before 2.0.5, 2.1.x before 2.1.11, 2.2.x before 2.2.9, and 2.3.x before 2.3.7, has XSS because add_query_arg is misused.

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 Easy Digital Downloads (EDD) Quota theme for WordPress has a reflected Cross-Site Scripting (XSS) vulnerability due to misuse of the WordPress add_query_arg function. This function, when used without proper output escaping, allows attackers to inject malicious scripts via URL parameters that are then rendered in the browser without sanitization.

MitigationUpgrade Easy Digital Downloads to version 1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, or 2.3.7 or later. If unable to upgrade, ensure all add_query_arg outputs are properly escaped using esc_url() or esc_attr() before rendering.

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
Easy Digital DownloadsWordPress extension
Affected:>= 1.8, < 1.8.7>= 1.9, < 1.9.10>= 2.0, < 2.0.5>= 2.1, < 2.1.11>= 2.2, < 2.2.9>= 2.3, < 2.3.7
QuotaApplication
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
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 checks

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

  1. Check if Easy Digital Downloads plugin is installed
    Look for the EDD plugin directory in wp-content/plugins/easy-digital-downloads or check the WordPress plugin admin page for the presence of 'Easy Digital Downloads'
    Affected if The plugin is installed and active in WordPress
  2. Determine the installed EDD version
    Open the main plugin file (usually easy-digital-downloads.php) and look for the 'Version' header in the plugin comment block, or check the version shown in the WordPress plugins admin page
    Affected if The installed version falls within any of these ranges: >=1.8 and <1.8.7; >=1.9 and <1.9.10; >=2.0 and <2.0.5; >=2.1 and <2.1.11; >=2.2 and <2.2.9; >=2.3 and <2.3.7
  3. Check if the Quota theme/template is active
    Look for the 'edd-quota' directory in wp-content/themes/ or check for any theme named 'Quota' in the WordPress themes admin, or search for files referencing 'quota' within the EDD plugin templates
    Affected if The Quota theme or related template files are present and active in the WordPress installation
  4. Inspect for vulnerable add_query_arg usage
    Search the EDD plugin files (especially in the includes/ and templates/ directories) for add_query_arg function calls that are not followed by esc_url(), esc_attr(), or similar sanitization functions when outputting to HTML
    Affected if Code contains add_query_arg calls where the output is rendered directly in HTML without proper escaping
  5. Test URL parameter reflection
    Navigate to any EDD page (such as a download page or checkout) and append a test parameter like ?test=<script>alert(1)</script> to the URL, then check if the parameter value is reflected unchanged in the page source
    Affected if The parameter value appears unescaped in the HTML output (visible in page source as <script>alert(1)</script>)

The environment is affected if Easy Digital Downloads is installed with a version in the affected ranges AND the Quota theme/templates are present, with add_query_arg being used unsafely in visible URLs.

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
Upgrade available Upgrade to 1.8.7 / 1.9.10 / 2.0.5 or later
Fixed in 1.8.71.9.102.0.5
Interim mitigation

Upgrade Easy Digital Downloads to version 1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, or 2.3.7 or later. If unable to upgrade, ensure all add_query_arg outputs are properly escaped using esc_url() or esc_attr() before rendering.

Fix this in Easy Digital Downloads Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

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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-2015-9534 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data