What’s Vulnerable › Vulnerabilities
CVE-2026-86781: SSL Zen < 4.7.40 - Subscriber+ TLS Private Key Disclosure
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-11 · updated 2026-09-11
- Weakness: CWE-287
Description
The SSL Zen — SSL Certificate Installer & HTTPS Redirects WordPress plugin before 4.7.40 does not perform capability or nonce checks on a certificate-file download routine that runs early in the WordPress admin request lifecycle, allowing any authenticated user, including Subscribers, to download the site's TLS private key, certificates, and diagnostic logs.
Affected products
- SSL Zen — SSL Certificate Installer & HTTPS Redirects: before 4.7.40 — fixed in 4.7.40
How to fix
Upgrade to a fixed version: SSL Zen — SSL Certificate Installer & HTTPS Redirects 4.7.40. Check the vendor advisory for mitigations.
References
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