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CVE Record

CVE-2015-9377: iThemes Builder Theme Depot before 5.0.30 for WordPress has XSS via add_query_arg() and remove_query_arg().

iThemes Builder Theme Depot before 5.0.30 for WordPress has XSS via add_query_arg() and remove_query_arg().

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2015-9377 is a cross-site scripting issue in iThemes Builder Theme Depot for WordPress before 5.0.30. A vulnerable site may reflect unsafe input into a browser page, potentially letting an attacker run script in a user’s session. The source bundle does not provide CVSS, exploit details, or confirmed active exploitation.

Executive priority

Treat this as a targeted WordPress maintenance risk, not an emergency based on the supplied evidence. Prioritize confirmation and upgrade where the theme is present, especially on externally reachable sites or sites used by administrators.

Technical view

The CVE describes XSS caused by unsafe use of WordPress add_query_arg() and remove_query_arg() in iThemes Builder Theme Depot before 5.0.30. Public references are advisory-level and do not include a complete affected-code map, payload conditions, or remediation details beyond the fixed version boundary.

Likely exposure

Exposure is limited to WordPress sites running iThemes Builder Theme Depot earlier than 5.0.30. The bundle does not identify affected CPEs, hosting conditions, authentication requirements, or whether vulnerable paths are public or admin-only.

Exploitation context

The CVE is not listed as KEV in the supplied bundle, and no cited source in the bundle confirms active exploitation. Because this is XSS in a WordPress component, risk depends on reachable vulnerable pages and user interaction context.

Researcher notes

Evidence is sparse: no CVSS, CWE, CPE, authentication context, or exploit prerequisites are provided. The key technical clue is XSS tied to add_query_arg() and remove_query_arg(), matching the broader 2015 WordPress advisory theme around unsafe URL output handling.

Mitigation direction

  • Inventory WordPress sites for iThemes Builder Theme Depot installations.
  • Upgrade iThemes Builder Theme Depot to 5.0.30 or later if available.
  • Review iThemes guidance for any replacement or retirement advice.
  • Prioritize sites with privileged WordPress users or public-facing traffic.
  • Keep WordPress core, themes, and plugins current.

Validation and detection

  • Confirm installed Theme Depot versions are 5.0.30 or later.
  • Check vendor release notes or advisory references for remediation confirmation.
  • Review web logs for unusual query-string activity around affected WordPress paths.
  • Verify no vulnerable legacy copies remain in backups or inactive themes.
  • Document whether the component is public-facing, admin-only, or unused.
Prepared
Confidence
medium
Sources
4

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

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

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CVE-2015-9377 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
3Source 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.