CVE-2026-8981
3.5
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
Summary
The Custom Block Builder WordPress plugin before 4.3.0 does not consistently check the unfiltered_html capability across all paths that write to its block template code fields, allowing administrators on multisite installations (or single-site installs with DISALLOW_UNFILTERED_HTML defined) to inject arbitrary JavaScript that executes for any visitor of pages embedding the affected block.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | Custom Block Builder | 0 < 4.3.0 | affected |
Weaknesses
- CWE-79 Cross-Site Scripting (XSS)
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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