Blocksy Companion <= 1.8.81 — Authenticated(Subscriber+) Sensitive Information Exposure via blocksy_posts shortcode
CVE-2023-1911Published · Updated Action summary
Affected: ≤1.8.81Update to 1.8.82 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Blocksy Companion blocksy-companion
- Affected≤ 1.8.81
- Patched in1.8.82
Update to 1.8.82 or newer.
You are affected if you run ≤ 1.8.81. Version 1.8.82 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Blocksy Companion.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 1.8.82, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Blocksy Companion to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Erwan LR.
The Blocksy Companion plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.8.81 via the blocksy_posts shortcode. This can allow authenticated attackers with subscriber-level permissions or above to extract sensitive data including draft posts.
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 Blocksy Companion
All 16| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.1.60Update to 2.1.61 | CVE-2026-65444 | |
| Critical9.1 | Unauthenticated Privilege Escalation to 'role' Parameter ≤2.1.58Update to 2.1.59 | CVE-2026-107645 | |
| Medium5.3 | Missing Authorization ≤2.1.55Update to 2.1.56 | CVE-2026-97247 | |
| Medium6.4 | Authenticated (Author+) Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data) ≤2.1.51Update to 2.1.52 | CVE-2026-18488 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via 'blc-review-images[]' Parameter ≤2.1.46Update to 2.1.47 | CVE-2026-15158 |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.1.60Update to 2.1.61
- Critical9.1Unauthenticated Privilege Escalation to 'role' Parameter
≤2.1.58Update to 2.1.59
- Medium5.3Missing Authorization
≤2.1.55Update to 2.1.56
- Medium6.4Authenticated (Author+) Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data)
≤2.1.51Update to 2.1.52
- Critical9.8Unauthenticated Arbitrary File Upload via 'blc-review-images[]' Parameter
≤2.1.46Update to 2.1.47
Timeline
CVE published
Severity medium, CVSS 4.3
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.