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TI-2026-76029 Aliases CVE-2026-109989GHSA-5jfw-8m7v-h73m

Stored cross-site scripting in Themify Popup WordPress plugin

Priority LOW 28CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Themify Popup plugin for WordPress is affected in all versions up to and including 1.4.7. Insufficient input sanitization and output escaping of the popup_width_unit parameter enables stored cross-site scripting (CWE-79). An authenticated attacker with author-level access or above can inject arbitrary web scripts into pages that execute whenever a user accesses an injected page.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Themify Popup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'popup_width_unit' parameter in all versions up to, and including, 1.4.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00188 8th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
themifymeThemify Popupup to 1.4.7—No fix listedCNA
  • Themify Popup Vendorthemifyme Affected up to 1.4.7 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Themify Popup.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-18 Threatist record created from CVE-2026-109989
  2. 2026-10-18 Alias added: GHSA-5jfw-8m7v-h73m

References

Other 5

  • TI-2023-24789 WordPress Themify Ultra theme <= 7.3.5 - Authenticated Arbitrary Settings Change vulnerability CVSS 3.1HIGH 8.8
  • TI-2024-02839 Themify Builder < 7.5.8 - Open Redirect CVSS 3.1MEDIUM 6.1
  • TI-2023-02482 Conditional Menus < 1.2.1 - Reflected XSS CVSS 3.1MEDIUM 6.1
  • TI-2023-00346 Themify Portfolio Post < 1.2.2 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
  • TI-2022-04383 Themify Shortcodes < 2.0.8 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
  • TI-2022-04079 Themify Portfolio Post < 1.2.1 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
See all 62 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences