CVE-2026-87070Network attack vectorHinoki check available

Unauthenticated vote-limit bypass via spoofed forwarding headers

Published Sep 23, 2026 · Updated Sep 23, 2026

Use of a less trusted source in WPMU DEV Forminator Forms before 1.57.2.1 allows remote attackers to bypass poll vote limits. The plugin trusts client-supplied forwarding headers without confirming a trusted proxy and uses the resulting address for vote enforcement and attribution. Any unauthenticated visitor able to reach a poll can submit unlimited votes and choose the address recorded for each submission.

CVSS severity5.3
Medium
EPSS probability0.12%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Use of a less trusted source in WPMU DEV Forminator Forms before 1.57.2.1 allows remote attackers to bypass poll vote limits. The plugin trusts client-supplied forwarding headers without confirming a trusted proxy and uses the resulting address for vote enforcement and attribution. Any unauthenticated visitor able to reach a poll can submit unlimited votes and choose the address recorded for each submission.

The record

CVE
CVE-2026-87070
Published
Sep 23, 2026
Updated
Sep 23, 2026
Vendor
WPMU DEV
Product
Forminator Forms
Classifications
CWE-348
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 23, 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 <1.57.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Forminator Formsversion=0 <1.57.2.1

Published CVSS scores

5.3WPScanCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-348Use of Less Trusted Source

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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