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VulnerabilityPublished

CVE-2026-86781: SSL Zen (WordPress plugin) · Improper Authentication

Affects SSL Zen (WordPress plugin)Source CVE Database V5

0

Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.7.40 when convenient.

Data as of 27 Oct 2026, 05:11 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.7.40
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade SSL Zen (WordPress plugin) to 4.7.40.

Affected software

ProductAffectedFixed in
SSL Zen — SSL Certificate Installer & HTTPS RedirectsAffected
  • <4.7.40
Fixed in
  • 4.7.40

AI-suggested

Users of the SSL Zen plugin should upgrade to version 4.7.40 or later where this vulnerability is fixed. Since the plugin version 4.7.40 addresses this issue, applying the official update is the recommended remediation. No alternative mitigations are indicated in the available data.

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.

References

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