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VulnerabilityPublished

CVE-2026-14936: Simple Membership (WordPress plugin) · Insufficient Verification of Data Authenticity

Affects Simple Membership (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.7.7 when convenient.

Data as of 5 Nov 2026, 00:01 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 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.7.7
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 5 Nov 2026.

What to do

Upgrade Simple Membership (WordPress plugin) to 4.7.7.

Affected software

ProductAffectedFixed in
Simple MembershipAffected
  • <4.7.7
Fixed in
  • 4.7.7

AI-suggested

Users should upgrade to Simple Membership version 4.7.7 or later once available, as the vulnerability affects versions before 4.7.7. If you cannot patch yet, administrators should consider disabling PayPal payment processing or implementing additional verification controls outside the plugin to ensure payment authenticity.

Description

A vulnerability in the Simple Membership WordPress plugin before version 4.7.7 allows unauthenticated users to activate or extend memberships by exploiting insufficient verification of PayPal payment notifications. The plugin does not confirm that the payment notification was sent to the site's configured merchant account, enabling attackers to use payments made to arbitrary PayPal accounts they control.

References

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