Greenshift <= 12.8.3 — Missing Authorization to Unauthenticated Private Reusable Block Disclosure via 'gspb_el_reusable_load'
CVE-2026-2371Published · Updated Action summary
Affected: ≤12.8.3Update to 12.8.4 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-862 Missing Authorization
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Greenshift – animation and page builder blocks greenshift-animation-and-page-builder-blocks
- Affected≤ 12.8.3
- Patched in12.8.4
Update to 12.8.4 or newer.
You are affected if you run ≤ 12.8.3. Version 12.8.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Greenshift – animation and page builder blocks.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 12.8.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Greenshift – animation and page builder blocks to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Lucas Montes (NiRoX).
The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 12.8.3. This is due to missing authorization and post status validation in the `gspb_el_reusable_load()` AJAX handler. The handler accepts an arbitrary `post_id` parameter and renders the content of any `wp_block` post without checking `current_user_can('read_post', $post_id)` or verifying the post status. Combined with the nonce being exposed to unauthenticated users on any public page using the `[wp_reusable_render]` shortcode with `ajax="1"`, this makes it possible for unauthenticated attackers to retrieve the rendered HTML content of private, draft, or password-protected reusable blocks.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Greenshift – animation and page builder blocks
All 30| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.4 | Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Author URL via Interaction Layer attach-attribute to Counter data-prefix ≤13.2.2Update to 13.2.3 | CVE-2026-119218 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in Nested {{COOKIE:}} Placeholder via {{GET:}} Parameter ≤13.2.2Update to 13.2.3 | CVE-2026-120520 | |
| Medium5.4 | Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Content via Split Text innerText ≤13.2.1Update to 13.2.2 | CVE-2026-107629 | |
| Medium5.4 | Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Content via Nested Latest Comments Block ≤13.2.1Update to 13.2.2 | CVE-2026-107627 | |
| Medium6.1 | Reflected Cross-Site Scripting via '{{GET:}}' Dynamic Placeholder ≤13.2.0Update to 13.2.1 | CVE-2026-93880 |
- Medium5.4Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Author URL via Interaction Layer attach-attribute to Counter data-prefix
≤13.2.2Update to 13.2.3
- Medium5.3Unauthenticated Sensitive Information Exposure in Nested {{COOKIE:}} Placeholder via {{GET:}} Parameter
≤13.2.2Update to 13.2.3
- Medium5.4Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Content via Split Text innerText
≤13.2.1Update to 13.2.2
- Medium5.4Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment Content via Nested Latest Comments Block
≤13.2.1Update to 13.2.2
- Medium6.1Reflected Cross-Site Scripting via '{{GET:}}' Dynamic Placeholder
≤13.2.0Update to 13.2.1
Same weakness (Missing Authorization)
All Missing Authorization| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.