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Forminator Forms EUVDEUVD-2026-113708

| CVE-2026-5461 MEDIUM
External Control of File Name or Path (CWE-73)
2026-10-30 Wordfence GHSA-r8hv-m5jv-xrcr
6.5
CVSS 3.1 · Vendor: Wordfence
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Send draft submission with poisoned upload metadata
  2. Exploit
    Submit second draft referencing previous_draft_id
  3. Execution
    Plugin uses unvalidated path during draft cleanup
  4. Impact
    Delete arbitrary non-PHP file in wp-content/uploads/

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V5 - File Handling File name/path control
Exploitation Conditions

Requires a published Forminator form that includes a file upload field and supports draft/save-and-continue submissions, since the attack abuses unvalidated upload field metadata in draft submissions combined with the previous_draft_id parameter. No authentication is required (PR:N) and no user interaction is needed (UI:N). Exploitation is bounded: only non-PHP files can be deleted, and only within the wp-content/uploads/ directory - PHP files and paths outside uploads are not affected, which limits the practical damage to removal of media/attachments rather than code tampering.

Impact

This is a genuine but moderate-priority issue rather than a top-tier emergency. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) makes it remotely reachable by unauthenticated attackers with low complexity and no user interaction, which raises its reachability profile; however, impact is constrained to I:L/A:L with C:N - it enables deletion of arbitrary non-PHP files inside wp-content/uploads/ only, not code execution or data disclosure. The vuln.today priority is 'this_month', not act_now/emergency, consistent with the limited impact. No EPSS score was supplied, no CISA KEV listing is present, and no confirmed public exploit code is indicated in the input - the Wordfence and plugins.trac links are an advisory plus source/patch references, not a working PoC. Signals are therefore broadly consistent: easy to reach but limited in damage. The 'Information Disclosure' tag conflicts with the actual mechanism and the C:N metric - this is a file-deletion (integrity/availability) flaw, not a confidentiality one; treat the tag as inaccurate.

Exploit ScenarioDerived

An unauthenticated attacker submits a draft form entry to a Forminator form that has a file upload field, planting attacker-controlled upload field metadata that points at an arbitrary file path under wp-content/uploads/. They then submit a second draft that references the poisoned draft via the previous_draft_id parameter, causing the plugin to delete the referenced non-PHP file. No public exploit code is identified in the provided data at time of analysis.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 30, 2026

Unauthenticated deletion of arbitrary non-PHP files inside wp-content/uploads/ affects every version of the Forminator Forms WordPress plugin up to and including 1.55.0.2. The plugin trusts upload field metadata supplied in POST requests for draft submissions, and when a later draft is linked to the poisoned one through the previous_draft_id parameter, that attacker-controlled metadata is used as the file path for a delete operation. No KEV entry, no EPSS signal and no public exploit code were identified at time of analysis; exploitation is limited to media and attachments rather than code execution, since PHP files and paths outside the uploads directory are out of scope, keeping this a moderate-priority issue slated for this-month handling rather than emergency response.

RemediationAI

Upstream fix available (PR/commit); released patched version not independently confirmed - the vendor SVN changeset at https://plugins.trac.wordpress.org/changeset?reponame=&old=3593819%40forminator&new=3593819%40forminator touches the vulnerable code, but no tagged release number beyond the vulnerable 1.55.0.2 is given in the available data, so administrators should track the Wordfence advisory (https://www.wordfence.com/threat-intel/vulnerabilities/id/de1aaacf-8fe1-4a1e-9846-f78cc469ec20?source=cve) and the plugin's changelog to confirm the first fixed build before relying on an update. Until that version is confirmed, the exploitable surface is a published form that contains a file upload field and permits draft or save-and-continue submissions; removing the upload field from published forms, or disabling draft saving on forms that need uploads, eliminates the attack path at the cost of losing those form capabilities. Note that the restriction is narrow by design - only non-PHP files inside wp-content/uploads/ can be removed, so PHP files and paths outside the uploads directory are not exposed and no code-tampering workaround is required beyond the above.

Affected VersionsENISA

Forminator Forms – Contact Form, Payment Form & Custom Form Builder 0 ≤1.55.0.2

Affected Packages

euvd forminator_forms_contact_form_payment_form_custom_form_builder no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause class is CWE-73 (External Control of File Name or Path): the plugin builds a filesystem path for deletion from data supplied by the client instead of validating it against server-side state. Forminator's custom-forms front controller (library/modules/custom-forms/front/front-action.php, around line 692) accepts upload field metadata from POST bodies during draft submissions without verifying that the metadata corresponds to an actual upload, and the entry model (library/model/class-form-entry-model.php, around lines 1387 and 2975) later consumes that stored metadata when a subsequent draft references the poisoned record via previous_draft_id, performing the deletion at that point. The referenced upstream changeset (3593819) in the WordPress plugin SVN indicates where the code was touched. Because the deletion primitive is constrained by the uploads-path assumption and by a non-PHP file filter, it yields a limited-integrity, limited-availability impact (C:N/I:L/A:L) rather than arbitrary file manipulation or code execution. Preconditions are a published form containing a file upload field that also supports draft / save-and-continue submissions; the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms the attacker needs no credentials and no victim interaction once such a form exists.

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Severity by source

Vendor (Wordfence) PRIMARY 6.5 MEDIUM
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
vuln.today AI 6.5 MEDIUM

Unauthenticated remote request with no user interaction (AV:N/AC:L/PR:N/UI:N); deletion of limited non-PHP files in uploads gives I:L/A:L and no data exposure gives C:N.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

DescriptionCVE.org

The Forminator Forms plugin for WordPress is vulnerable to Limited File Deletion in all versions up to, and including, 1.55.0.2. This is due to the plugin accepting arbitrary upload field metadata from POST requests in draft submissions without proper validation, which is then used to delete files when a subsequent draft references the poisoned draft via the previous_draft_id parameter. This makes it possible for unauthenticated attackers to delete arbitrary non-PHP files within the wp-content/uploads/ directory.

Threat Intelligence Overview

EPSS Score
0.3%
Top 78% exploitable
Prevalence
Medium
popular WordPress form-builder plugin, large but not universal install base
Social Media
1
Sightings
Data Quality
7 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact· derived
Medium
Technical Impact
Partial

Priority Score

32
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +32
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

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