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LearnDash MemberDash account takeover via IDOR in profile editing

CVE-2026-18053

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

8.8HighCNA
Exploited
No known exploitation
Fix
No fix listed
Who is exposed
Not reported
Published
Last modified
Reference
Last checked
17/100 · provisional
None on Exploit-DB, Metasploit or GitHub

Summary

The MemberDash plugin for WordPress, made by LearnDash, lets a logged-in user with basic subscriber access remotely take over the site. An attacker can change any WordPress user's email and password, including the administrator's, and then log in as that user to gain full admin control.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Original description

The MemberDash plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.8.7. This is due to a mass-assignment vulnerability in the user_account_manager() function's edit_profile branch, where all submitted $_POST fields are iterated and directly assigned to the current member object via the MS_Model __set() magic method with no field allowlist and no capability or ownership check on the submitted id parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject an arbitrary user ID via the id parameter — overwriting any WordPress user's email address and password, including the site administrator's — and subsequently use those modified credentials to gain full administrative access to the site.

cve.now Index

17Pcve.now Index 17 of 100 · methodology v3 · provisional
  • Exploitation?/40Unknown. No CISA SSVC exploitation rating yet
  • Exposure3/25Reachable over the network · Unknown: No advisory context yet
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity8.8/10CVSS 8.8
  • No patch5/5No patch listed yet

What would change the score

  • Would score about 72 if added to CISA KEV
  • Would score about 67 if CISA's SSVC rates exploitation active
  • Would score about 36 if advisories confirm default setups are exposed

How the score works · Rankings

Check your systems with an agent

Paste this into a coding or ops agent. It checks your systems read-only and reports a table per asset.

Check whether my systems are affected by CVE-2026-18053 (MemberDash <= 1.8.7 - Authenticated (Subscriber+) Privilege Escalation to Administrator via Edit Profile 'id' Parameter), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-18053 (entry last updated 2026-11-14):
Affected:
- LearnDash MemberDash: through 1.8.7
Fixed versions: none listed yet.
Setup: unknown whether the bug needs a non-default feature or setting. Check the advisory.
CISA KEV: CVE-2026-18053 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-18053 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://www.wordfence.com/threat-intel/vulnerabilities/id/70d0bc5e-8db6-4a42-af19-d41280ec1207?source=cve
- https://docs.nexcess.com/software/changelogs/learndash/memberdash/
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-18053
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-18053"}.

Timeline

  1. CVE published
  2. First seen by cve.now

Affected versions

  • LearnDash MemberDash

    through 1.8.7

Evidence 4

CVE record · 2

Establishes: The identifier and description.

  1. Record
  2. Record

Other links · 2

  1. Link
  2. Link

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-18053

Is CVE-2026-18053 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-18053?

MemberDash: through 1.8.7.Source: cve.now feed data

Sources

More CVEs

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