Cross-site scripting in popupbuilder Popup Builder – Create highly converting, mobile…
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 Popup Builder – Create highly converting, mobile friendly marketing popups. plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'sg_popup' shortcode in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-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
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| popupbuilder | Popup Builder – Create highly converting, mobile friendly marketing popups. | up to 4.4.1 | — | No fix listed | CNA |
- Popup Builder – Create highly converting, mobile friendly marketing popups. Vendorpopupbuilder Affected up to 4.4.1 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sygnoos:popup_builder:*:*:*:*:*:*:*:* | — | — | popupbuilder |
- cpe:2.3:a:sygnoos:popup_builder:*:*:*:*:*:*:*:* Versions — — ·popupbuilder
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9856
- 2026-10-03 Alias added: GHSA-x73c-vmj2-65g5
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/beb6b26a-3fe1-44e0-9fda-97b288abf735?source=cve
- https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.4.0/com/helpers/AdminHelper.php#L438
- https://plugins.trac.wordpress.org/browser/popup-builder/tags/4.4.0/com/classes/popups/SGPopup.php#L1368
- https://plugins.trac.wordpress.org/changeset/3384281
More popupbuilder vulnerabilities
- TI-2022-00402 Popup Builder < 4.1.1 - SQL Injection to Reflected Cross-Site Scripting CVSS 3.1CRITICAL 9.8
- TI-2023-05777 popup-builder < 4.2.6 - Admin+ SSRF & File Read CVSS 3.1HIGH 7.5
- TI-2024-08748 Popup Builder < 4.3.5 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2020-07226 The Popup Builder plugin 2.2.8 through 2.6.7.6 for WordPress is vulnerable to SQL… CVSS 3.1CRITICAL 9.8
- TI-2019-10917 A SQL injection vulnerability exists in the Sygnoos Popup Builder plugin before 3.45 for… CVSS 3.1CRITICAL 9.8
- TI-2021-07360 Popup Builder < 4.0.7 - LFI to RCE CVSS 3.1HIGH 8.8
Sources
- CVE-2025-9856 · CVE Program
- CVE-2025-9856 · NVD
- FIRST EPSS
- GHSA-x73c-vmj2-65g5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences