Magazine Companion <= 1.2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting
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 Magazine Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'headerHtmlTag' attribute in the bnm-blocks/featured-posts-1 block in all versions up to, and including, 1.2.3. This is due to insufficient input sanitization and output escaping when using user-supplied values as HTML tag names. 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 |
|---|---|---|---|---|---|
| pubudu-malalasekara | Post Blocks & Tools | up to 1.2.3 | — | No fix listed | CNA |
- Post Blocks & Tools Vendorpubudu-malalasekara Affected up to 1.2.3 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-11828
- 2026-10-03 Alias added: GHSA-4q5h-9535-gvr5
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8fa2e98b-5054-46fd-b22e-eac59b581a3c?source=cve
- https://wordpress.org/plugins/bnm-blocks
- https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.2.3/src/blocks/posts/featured-posts-1/view.php#L34
- https://plugins.trac.wordpress.org/changeset/3392064/
More pubudu-malalasekara vulnerabilities
- TI-2026-05009 Post Blocks & Tools <= 1.3.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'sliderStyle' Block Attribute CVSS 3.1MEDIUM 6.4
Sources
- CVE-2025-11828 · CVE Program
- CVE-2025-11828 · NVD
- FIRST EPSS
- GHSA-4q5h-9535-gvr5 · 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