CVE-2026-16310Network attack vector

Unauthenticated account takeover via unchecked registration ID

Published Sep 6, 2026 · Updated Sep 7, 2026

Authorization bypass in LearnDash MemberDash 1.8.5 and earlier allows remote attackers to take over any WordPress user account. The registration flow accepts a requester-controlled id value and resets the referenced user's password without verifying ownership. No authentication or user interaction is required, and targeting an administrator grants control of the WordPress site without notifying the account holder.

CVSS severity9.8
Critical
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in LearnDash MemberDash 1.8.5 and earlier allows remote attackers to take over any WordPress user account. The registration flow accepts a requester-controlled id value and resets the referenced user's password without verifying ownership. No authentication or user interaction is required, and targeting an administrator grants control of the WordPress site without notifying the account holder.

The record

CVE
CVE-2026-16310
Published
Sep 6, 2026
Updated
Sep 7, 2026
Vendor
LearnDash
Product
MemberDash
Classifications
CWE-639, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.8.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LearnDash · MemberDashversion=0 <=1.8.5

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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