Qubely – Advanced Gutenberg Blocks <= 1.8.5 — Insufficient Authorization
CVE-2021-24916Published · Updated Action summary
Affected: <1.8.6Update to 1.8.6 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:N/I:L/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:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-863 Incorrect Authorization
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Qubely – Advanced Gutenberg Blocks qubely
- Affected< 1.8.6
- Patched in1.8.6
Update to 1.8.6 or newer.
You are affected if you run < 1.8.6. Version 1.8.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Qubely – Advanced Gutenberg 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 1.8.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Qubely – Advanced Gutenberg Blocks to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Krzysztof Zając.
The Qubely plugin for WordPress is vulnerable to unauthorized arbitrary e-mail sending in versions up to, and including, 1.8.5. This is due to insufficient validation on the presence of a contact form block and validation on the email fields in the qubely_send_form_data() function called via an AJAX action. This makes it possible for unauthenticated attackers to send emails with arbitrary content to arbitrary addresses.
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 Qubely – Advanced Gutenberg Blocks
All 12| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤1.8.14No patch available | CVE-2026-65531 | |
| Medium6.4 | Authenticated (Author+) Stored Cross-Site Scripting ≤1.8.14No patch available | CVE-2026-39638 | |
| Medium5.4 | Missing Authorization ≤1.8.14No patch available | CVE-2025-58663 | |
| Medium4.3 | Authenticated (Contributor+) Sensitive Information Exposure ≤1.8.14No patch available | CVE-2025-58249 | |
| Medium4.3 | Authenticated (Contributor+) Sensitive Information Exposure via qubely_get_content ≤1.8.13Update to 1.8.14 | CVE-2024-13228 |
- Medium5.3Missing Authorization
≤1.8.14No patch available
- Medium6.4Authenticated (Author+) Stored Cross-Site Scripting
≤1.8.14No patch available
- Medium5.4Missing Authorization
≤1.8.14No patch available
- Medium4.3Authenticated (Contributor+) Sensitive Information Exposure
≤1.8.14No patch available
- Medium4.3Authenticated (Contributor+) Sensitive Information Exposure via qubely_get_content
≤1.8.13Update to 1.8.14
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.