Security readout for executives and security teams
Plain-English summary
This is a cross-site scripting issue in the PayPal Pro Add-on for iThemes Exchange on WordPress before version 1.1.0. A vulnerable site could expose users or administrators to injected browser-side script. The public sources do not report active exploitation.
Executive priority
Treat this as a targeted WordPress plugin hygiene issue, not a broad enterprise emergency. Prioritize any internet-facing WordPress site processing payments or used by privileged administrators.
Technical view
The CVE attributes XSS to unsafe handling around WordPress add_query_arg() and remove_query_arg() in PayPal Pro Add-on for iThemes Exchange before 1.1.0. The source bundle does not provide CVSS, CWE, affected CPEs, or detailed attack preconditions.
Likely exposure
Exposure is limited to WordPress sites running PayPal Pro Add-on for iThemes Exchange before 1.1.0. Sites without that add-on, or already on 1.1.0 or later, are not shown as affected by the provided sources.
Exploitation context
CISA KEV status is false, and the provided sources do not state active exploitation. The issue was part of a 2015 coordinated WordPress plugin security update involving unsafe URL helper usage.
Researcher notes
The public record is sparse: no CVSS, CWE, exploit details, or precise affected CPEs are provided. Analysis should stay anchored to plugin presence and version, plus vendor advisory confirmation.
Mitigation direction
- Inventory WordPress sites for PayPal Pro Add-on for iThemes Exchange.
- Update the add-on to version 1.1.0 or later if installed.
- If the add-on is unused, remove or disable it.
- Review iThemes and Sucuri advisory guidance for site-specific instructions.
- Prioritize administrator-facing WordPress sites and payment workflows first.
Validation and detection
- Confirm installed plugin name and version from WordPress administration or asset inventory.
- Verify no vulnerable copy below version 1.1.0 remains deployed.
- Check whether the plugin is active on public or administrator-accessible WordPress sites.
- Review web and WordPress logs for unusual script injection indicators.
- Document remediation status for each affected WordPress instance.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2015-9373 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.sucuri.net/2015/04/security-advisory-xss-vulnerability-affecting-multiple-wordpress-plugins.htmlCVE reference · x_refsource_MISC
- https://ithemes.com/coordinated-wordpress-plugin-security-update/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.