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Easy Digital DownloadsWordPress extension · Awesomemotive

CVE-2015-9526

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) Reviews extension 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) Reviews extension for WordPress contains a Cross-Site Scripting (XSS) vulnerability caused by misuse of the add_query_arg() function, which does not automatically escape output. Attackers can inject malicious scripts through crafted URL parameters.

MitigationUpdate the EDD Reviews extension to the patched versions (1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, or 2.3.7) or later, which properly escape output when constructing URLs.

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
ReviewsApplication
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. Locate the Easy Digital Downloads plugin files
    Check the wp-content/plugins/easy-digital-downloads/ directory for the main plugin file (usually easy-digital-downloads.php) and open it to find the Version header in the plugin comments
    Affected if The plugin directory exists but the version cannot be verified or falls within the affected ranges
  2. Identify the installed EDD version
    Read the Version: X.X.X value from the plugin header comment at the top of the main EDD plugin file
    Affected if The version is >= 1.8 and < 1.8.7, OR >= 1.9 and < 1.9.10, OR >= 2.0 and < 2.0.5, OR >= 2.1 and < 2.1.11, OR >= 2.2 and < 2.2.9, OR >= 2.3 and < 2.3.7
  3. Locate the EDD Reviews extension
    Check the wp-content/plugins/edd-reviews/ directory (or similar naming like edd-reviews/reviews.php) for the reviews extension files
    Affected if The EDD Reviews extension directory exists, indicating the vulnerable component is present
  4. Identify the EDD Reviews extension version
    Open the main reviews extension file and read the Version from the plugin header comment
    Affected if Any version is found in the plugin header, as the advisory states all versions of the Reviews extension are affected
  5. Verify the add_query_arg usage in reviews code
    Search the EDD Reviews extension source files for occurrences of add_query_arg() function calls that are not followed by esc_url(), esc_attr(), or similar escaping functions
    Affected if Unescaped add_query_arg() calls are found that could be manipulated via URL parameters

The environment is affected if Easy Digital Downloads (any version listed in the affected ranges) AND the EDD Reviews extension are both installed, with unescaped add_query_arg() calls present in the reviews code.

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

Update the EDD Reviews extension to the patched versions (1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, or 2.3.7) or later, which properly escape output when constructing URLs.

Fix this in Easy Digital Downloads Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.

Scan for this in your stack

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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-2015-9526 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