An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Ajax.php
Published Mar 13, 2020
6.1
MEDIUMCVSS 3.1
EPSS 1.42%
Description
An XSS vulnerability in the popup-builder plugin before 3.64.1 for WordPress allows remote attackers to inject arbitrary JavaScript into existing popups via an unsecured ajax action in com/classes/Ajax.php. It is possible for an unauthenticated attacker to insert malicious JavaScript in several of the popup's fields by sending a request to wp-admin/admin-ajax.php with the POST action parameter of sgpb_autosave and including additional data in an allPopupData parameter, including the popup's ID (which is visible in the source of the page in which the popup is inserted) and arbitrary JavaScript which will then be executed in the browsers of visitors to that page. Because the plugin functionality automatically adds script tags to data entered into these fields, this injection will typically bypass most WAF applications.
Affected products
No data.
- < 3.64.1
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.42% (0.01421) | 71.90th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.42% (0.01421) | 71.66th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.11% (0.00106) | 43.77th | v3 (v2023.03.01) |
| Jun 27, 2024 | 0.11% (0.00106) | 43.61th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.11% (0.00106) | 41.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.56% (0.02561) | 61.74th | v2 (v2022.01.01) |
| Feb 3, 2022 | 3.63% (0.03634) | 72.14th | v1 |
| Jan 6, 2022 | 3.63% (0.03634) | 71.90th | v1 |
| Jan 5, 2022 | 0.83% (0.00833) | 59.62th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
References (2)
- https://wpvulndb.com/vulnerabilities/10127 x_refsource_MISCThird Party Advisory
- https://www.wordfence.com/blog/2020/03/vulnerabilities-patched-in-popup-builder-plugin-affecting-over-100000-sites/ x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://wpvulndb.com/vulnerabilities/10127 | x_refsource_MISCThird Party Advisory | |
| https://www.wordfence.com/blog/2020/03/vulnerabilities-patched-in-popup-builder-plugin-affecting-over-100000-sites/ | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.