Path traversal in posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & AI…
Priority LOW 22CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
The Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 5.0.0 via the 'plus_name' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary JS/CSS files on the server, which can lead to denial of service or destruction of critical plugin and theme assets.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00859 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| posimyththemes | Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder | up to 5.0.0 | — | No fix listed | CNA |
- Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder Vendorposimyththemes Affected up to 5.0.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15420
- 2026-10-03 Alias added: GHSA-cg9r-cc95-vm62
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/85550779-fd46-4130-92f1-b291d4e86b21?source=cve
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2985
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.17/classes/tp-registered-blocks.php#L2985
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.17/classes/tp-registered-blocks.php#L2862
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.17/classes/tp-registered-blocks.php#L3521
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.17/classes/tp-registered-blocks.php#L2710
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2862
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L3521
- https://plugins.trac.wordpress.org/browser/the-plus-addons-for-block-editor/tags/4.7.14/classes/tp-registered-blocks.php#L2710
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3614203%40the-plus-addons-for-block-editor&new=3614203%40the-plus-addons-for-block-editor
More posimyththemes vulnerabilities
- TI-2023-25501 WordPress The Plus Addons for Elementor Pro plugin <= 5.2.8 - Unauthenticated Local File Inclusion vulnerability CVSS 3.1CRITICAL 9.8
- TI-2021-06467 The Plus Addons for Elementor Page Builder < 4.1.7 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2023-24458 WordPress Nexter Theme <= 2.0.3 is vulnerable to SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2021-07228 The Plus Addons for Elementor Pro < 5.0.7 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2021-03189 Missing authorization in posimyththemes The Plus Addons for Elementor – Addons for… CVSS 3.1HIGH 8.8
- TI-2024-05069 The Plus Addons for Elementor – Elementor Addons, Page Templates, Widgets, Mega Menu… CVSS 3.1HIGH 8.8
Sources
- CVE-2026-15420 · CVE Program
- CVE-2026-15420 · NVD
- FIRST EPSS
- GHSA-cg9r-cc95-vm62 · 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