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CVE Record

CVE-2015-9528: The Easy Digital Downloads (EDD) Software Licensing extension for WordPress, as used with EDD 1.8.x before...

The Easy Digital Downloads (EDD) Software Licensing 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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This CVE is a cross-site scripting issue in the Easy Digital Downloads Software Licensing extension for WordPress. Affected sites running listed older EDD version branches could expose administrators or users to injected browser-side content. The source bundle names fixed version thresholds but does not provide CVSS scoring or exploit details.

Executive priority

Prioritize remediation for production WordPress commerce sites, especially those with administrators handling licensing or customer workflows. The business risk is session misuse, trust damage, and compromised site administration, but urgency is tempered by missing exploit and severity evidence.

Technical view

The issue is XSS caused by misuse of WordPress add_query_arg in the EDD Software Licensing extension as used with EDD 1.8.x through 2.3.x before specified maintenance releases. Affected version ranges are documented, but the bundle does not identify payload mechanics, authentication requirements, or affected endpoints.

Likely exposure

Exposure is likely limited to WordPress sites using the Easy Digital Downloads Software Licensing extension with EDD versions below 1.8.7, 1.9.10, 2.0.5, 2.1.11, 2.2.9, or 2.3.7.

Exploitation context

The source bundle states XSS but provides no evidence of active exploitation. CISA KEV status is false. Treat public internet-facing WordPress administration and commerce workflows as higher priority if vulnerable versions are present.

Researcher notes

The record is sparse: no CVSS, CWE, endpoint details, or exploit preconditions are provided. Analysis should stay version-focused and source-grounded. Do not assume active exploitation or universal WordPress impact beyond the named EDD Software Licensing extension context.

Mitigation direction

  • Inventory WordPress sites using Easy Digital Downloads and its Software Licensing extension.
  • Upgrade affected EDD branches to the fixed versions named in the CVE record or later.
  • Check the vendor security notice for any extension-specific update guidance.
  • Review recent WordPress administrative activity for suspicious links or injected content.
  • Apply normal WordPress hardening, including least-privilege admin access and prompt plugin updates.

Validation and detection

  • Confirm installed EDD and Software Licensing extension versions on each WordPress site.
  • Compare installed versions against the vulnerable branch thresholds in the CVE description.
  • Verify the site is no longer running an affected branch after updates.
  • Review vendor release notes or security notice for fixed-version confirmation.
  • Check whether any WAF or monitoring alerts reference XSS attempts against affected sites.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2015-9528 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.