vciy

CVE-2024-8428

INDEX BUILT · 2026-09-20

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ForumWP – Forum & Discussion Board Plugin <= 2.0.2 - Insecure Direct Object Reference to Authenticated (Subscriber+) Privilege Escalation via Account Takeover

CVE-2024-84284 of 4 sources documented this
24

rank 24 = 0 + 22 + 0 + 2 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00485  ·  without this subject the record ranks 24

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from the CNA  ·  without this subject the record ranks 2

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 24

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 22

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 24

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$24,200over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$24,200 = $4.99M incident cost x 1 exposure x 0.00485 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00485EPSSNOT IN KEVas of 2026-09-20
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2024-09-07, 646 days at 0.00, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running ultimatemember ForumWP – Forum &…? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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What counts as a move

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Record your call

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AcceptDeferPatch by…Not affectedMitigated

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-639 Authorization Bypass Through User-Controlled Keyreceipt
Published consequencesCWE-639: Access Control: Bypass Protection Mechanism; Access Control: Gain Privileges or Assume Identity[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed inNo fix version in held sources, as the index stood on 15 Jun 2026.
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA8.8 HIGHreceipt
Exploit probability0.00485 · top 59% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byWordfencereceipt
Recorded changes22 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productultimatemember ForumWP – Forum & Discussion Boardreceipt
Published rangesultimatemember forumwp <= 2.0.2receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Network requestrequires low privilegesultimatemember ForumWP – Forum & Di…CWE-639 weaknessFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-639data compromise

What it is stated by the CNA

The ForumWP – Forum & Discussion Board Plugin plugin for WordPress is vulnerable to Privilege Escalation via Insecure Direct Object Reference in all versions up to, and including, 2.0.2 via the submit_form_handler due to missing validation on the 'user_id' user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to change the email address of administrative user accounts which can then be leveraged to reset the administrative users password and gain access to their account. receipt

NVD's analysis a second authority

weakness
CWE-639
affected versions
ultimatemember forumwp <= 2.0.2
also scored by
[email protected] 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself wordfence.com plugins.trac.wordpress.org plugins.trac.wordpress.org receipt

Movement the material steps

7 Sep 20240.00050
17 Mar 20250.00081 · scoring model v2025.03.14
15 Jun 20260.00485 · scoring model v2026.06.15
Show all 22 observations
7 Sep 20240.00050
17 Mar 20250.00081
23 Mar 20250.00547
24 Mar 20250.00081
29 Mar 20250.00547
30 Mar 20250.00081
2 Apr 20250.00091
12 Apr 20250.00102
15 Apr 20250.00074
12 May 20250.00086
23 May 20250.00091
2 Jun 20250.00093
23 Jun 20250.00116
3 Jul 20250.00137
15 Oct 20250.00138
20 Oct 20250.00173
21 Oct 20250.00132
18 Nov 20250.00189
21 Nov 20250.00132
26 Jan 20260.0018
9 Apr 20260.002
15 Jun 20260.00485

22 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00485Published2024-09-06Index as of2026-06-15

The record had been public for 1 year, 9 months when this index was last written.

Published 2024-09-06 receipt · Index as of 2026-06-15 derived

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What usually comes next

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