Server-side request forgery in stellarwp Kadence Blocks — Page Builder Toolkit for…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
The Gutenberg Blocks with AI by Kadence WP plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 3.6.1. This is due to insufficient validation of the `endpoint` parameter in the `get_items()` function of the GetResponse REST API handler. The endpoint's permission check only requires `edit_posts` capability (Contributor role) rather than `manage_options` (Administrator). This makes it possible for authenticated attackers, with Contributor-level access and above, to make server-side requests to arbitrary endpoints on the configured GetResponse API server, retrieving sensitive data such as contacts, campaigns, and mailing lists using the site's stored API credentials. The stored API key is also leaked in the request headers.
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 |
|---|---|---|---|---|---|
| stellarwp | Kadence Blocks — Page Builder Toolkit for Gutenberg Editor | up to 3.6.1 | — | No fix listed | CNA |
- Kadence Blocks — Page Builder Toolkit for Gutenberg Editor Vendorstellarwp Affected up to 3.6.1 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:kadencewp:gutenberg_blocks_with_ai:*:*:*:*:*:*:*:* | — | — | Kadence WP |
- cpe:2.3:a:kadencewp:gutenberg_blocks_with_ai:*:*:*:*:*:*:*:* Versions — — ·Kadence WP
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1857
- 2026-10-03 Alias added: GHSA-8425-76gw-qxj4
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2ea8d38a-f5ce-40dd-a015-f56d60579e05?source=cve
- https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.5.32/includes/advanced-form/getresponse-rest-api.php#L77
- https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.5.32/includes/advanced-form/getresponse-rest-api.php#L57
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3454881%40kadence-blocks%2Ftrunk&old=3453204%40kadence-blocks%2Ftrunk&sfp_email=&sfph_mail=
More stellarwp vulnerabilities
- TI-2024-05498 Deserialization of untrusted data in stellarwp GiveWP – Donation Plugin and Fundraising… CVSS 3.1CRITICAL 10.0
- TI-2023-02655 BookIt <= 2.3.7 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2024-07671 The Events Calendar <= 6.6.4 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2024-03888 The Events Calendar < 6.4.0.1 - Reflected XSS CVSS 3.1CRITICAL 9.1
- TI-2024-07745 GiveWP – Donation Plugin and Fundraising Platform <= 3.16.1 - Unauthenticated PHP Object Injection CVSS 3.1CRITICAL 9.8
- TI-2024-04952 The Events Calendar < 6.8.2.1 - Unauthenticated Password Protected Event Disclosure CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-1857 · CVE Program
- CVE-2026-1857 · NVD
- FIRST EPSS
- GHSA-8425-76gw-qxj4 · 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