CVE-2026-5096Network attack vectorHinoki check available

Unauthenticated SSRF via unrestricted upload-field URL

Published Aug 28, 2026 · Updated Aug 28, 2026

Server-side request forgery in WPEverest Everest Forms 3.4.4 and earlier allows remote attackers to trigger arbitrary HTTP HEAD requests. The load_previous_field_value() method accepts an unrestricted upload-field URL from POST data, and get_local_file_size() passes it to wp_remote_head(). Exploitation requires a public form with an upload field and an empty required field to trigger re-rendering; the resulting server-side request can reach destinations available to the WordPress host.

CVSS severity5.3
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Server-side request forgery in WPEverest Everest Forms 3.4.4 and earlier allows remote attackers to trigger arbitrary HTTP HEAD requests. The load_previous_field_value() method accepts an unrestricted upload-field URL from POST data, and get_local_file_size() passes it to wp_remote_head(). Exploitation requires a public form with an upload field and an empty required field to trigger re-rendering; the resulting server-side request can reach destinations available to the WordPress host.

The record

CVE
CVE-2026-5096
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
WPEverest
Product
Everest Forms
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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 <=3.4.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · Everest Formsversion=0 <=3.4.4

Published CVSS scores

5.3WordfenceCVSS: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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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