Security readout for executives and security teams
Plain-English summary
This is a cross-site scripting issue in the iThemes Builder Theme Market WordPress theme before version 5.1.27. A vulnerable site could cause browser-executed script in a user session. The source bundle does not provide a CVSS score or active exploitation evidence.
Executive priority
Prioritize remediation for public WordPress sites using the affected theme, especially admin-facing or customer-facing sites. Business urgency is moderate because XSS can affect user trust, but exploitation and severity evidence are incomplete.
Technical view
CVE-2015-9378 describes XSS in iThemes Builder Theme Market before 5.1.27, associated with add_query_arg() and remove_query_arg() handling. The provided sources identify the issue and coordinated security update, but do not include exploit prerequisites, affected paths, or CVSS details.
Likely exposure
Exposure is likely limited to WordPress sites running iThemes Builder Theme Market versions earlier than 5.1.27. The bundle does not identify CPEs, installation counts, or specific vulnerable endpoints.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. Treat exploitation status as unconfirmed rather than active.
Researcher notes
The public bundle is sparse: no CVSS, CWE, CPE, vulnerable endpoint, or exploit conditions are provided. Validate exposure by version and vendor advisory matching, not by assumptions about all iThemes or WordPress products.
Mitigation direction
- Upgrade iThemes Builder Theme Market to version 5.1.27 or later.
- Check iThemes guidance for any related coordinated security updates.
- Inventory WordPress sites for the affected theme and version.
- Review logs and user reports for suspicious browser-side behavior.
Validation and detection
- Confirm whether iThemes Builder Theme Market is installed.
- Record the installed theme version on each WordPress site.
- Verify the installed version is 5.1.27 or later.
- Check vendor advisories for any additional affected iThemes components.
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-2015-9378 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.