SSL Zen – Free Let's Encrypt SSL Certificate & HTTPS/SSL Redirect WordPress Plugin <= 4.5.0 — Sensitive Information Exposure
CVE-2024-1076Published · Updated Action summary
Affected: ≤4.5.0Update to 4.6.0 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-287 Improper Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
SSL Zen — SSL Certificate Installer & HTTPS Redirects ssl-zen
- Affected≤ 4.5.0
- Patched in4.6.0
Update to 4.6.0 or newer.
You are affected if you run ≤ 4.5.0. Version 4.6.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under SSL Zen — SSL Certificate Installer & HTTPS Redirects.
- 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 4.6.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch SSL Zen — SSL Certificate Installer & HTTPS Redirects to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Krzysztof Zając.
The SSL Zen – Free Let's Encrypt SSL Certificate & HTTPS/SSL Redirect WordPress Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.5.0 via the unsafe storage of keys. This makes it possible for unauthenticated attackers to extract sensitive data that includes private keys.
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 SSL Zen — SSL Certificate Installer & HTTPS Redirects
All 8| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.9 | Authenticated (Administrator+) Path Traversal to Arbitrary File Read via 'file_name' Parameter ≤4.7.42Update to 4.7.43 | CVE-2026-17602 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'uri' Parameter ≤4.7.42Update to 4.7.43 | CVE-2026-17577 | |
| Medium6.1 | Reflected Cross-Site Scripting via 'uri' and 'host' Parameters ≤4.7.42Update to 4.7.43 | CVE-2026-15463 | |
| Medium4.3 | Authenticated (Subscriber+) Information Exposure <4.7.40Update to 4.7.40 | CVE-2026-86781 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤4.7.43No patch available | CVE-2026-28569 |
- Medium4.9Authenticated (Administrator+) Path Traversal to Arbitrary File Read via 'file_name' Parameter
≤4.7.42Update to 4.7.43
- Medium6.1Reflected Cross-Site Scripting via 'uri' Parameter
≤4.7.42Update to 4.7.43
- Medium6.1Reflected Cross-Site Scripting via 'uri' and 'host' Parameters
≤4.7.42Update to 4.7.43
- Medium4.3Authenticated (Subscriber+) Information Exposure
<4.7.40Update to 4.7.40
- Medium6.1Reflected Cross-Site Scripting
≤4.7.43No patch available
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.