AP Background <= 3.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
Published Oct 3, 2025
6.4
MEDIUMCVSS 3.1
EPSS 0.23%
Description
The AP Background plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'adv_parallax_back' shortcode in all versions up to, and including, 3.8.2 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.
Affected products
-
- Version 0StatusaffectedConstraints<=3.8.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Hovanesvn | AP Background | unaffected |
|
No data.
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:L/UI:N/S:C/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Oct 3, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.23% (0.00231) | 12.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.21% (0.00211) | 11.24th | v5 (v2026.06.15) |
| Oct 3, 2025 | 0.03% (0.00029) | 6.77th | v4 (v2025.03.14) |
References (3)
Change history (0)
No recorded changes yet.