Cross-site scripting in creativethemeshq Blocksy Companion
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 Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's blocksy_newsletter_subscribe shortcode in all versions up to, and including, 2.1.10 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 |
|---|---|---|---|---|---|
| creativethemeshq | Blocksy Companion | up to 2.1.10 | — | No fix listed | CNA |
- Blocksy Companion Vendorcreativethemeshq Affected up to 2.1.10 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9565
- 2026-10-03 Alias added: GHSA-95c9-mv7r-2wgh
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c28e740e-9337-41b5-a8e7-ca68e41eaed4?source=cve
- https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framework/extensions/newsletter-subscribe/extension.php#L191
- https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framework/extensions/newsletter-subscribe/helpers.php#L65
- https://wordpress.org/plugins/blocksy-companion/
- https://plugins.trac.wordpress.org/changeset/3360000/blocksy-companion/trunk/framework/extensions/newsletter-subscribe/helpers.php
More creativethemeshq vulnerabilities
- TI-2026-42084 Blocksy Companion Pro < 2.1.47 Unauthenticated File Upload via save_attachments CVSS 4.0CRITICAL 9.2
- TI-2023-01796 Blocksy Companion < 1.8.82 - Subscriber+ Draft Post Access CVSS 3.1MEDIUM 4.3
- TI-2026-12769 Blocksy Companion <= 2.1.46 - Unauthenticated Arbitrary File Upload via 'blc-review-images[]' Parameter CVSS 3.1CRITICAL 9.8
- TI-2026-41450 WordPress Blocksy Companion Pro plugin <= 2.1.46 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 10.0
- TI-2026-70281 Unauthenticated privilege escalation in Blocksy Companion CVSS 3.1CRITICAL 9.1
- TI-2026-28570 WordPress Blocksy Companion Pro plugin < 2.1.29 - SQL Injection vulnerability CVSS 3.1CRITICAL 9.3
Sources
- CVE-2025-9565 · CVE Program
- CVE-2025-9565 · NVD
- FIRST EPSS
- GHSA-95c9-mv7r-2wgh · 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