CVE-2026-6394Network attack vector

Unauthenticated SSRF via unvalidated demo import URL

Published May 20, 2026 · Updated May 20, 2026

SSRF in WPDive Nexa Blocks 1.1.1 and earlier allows remote attackers to send server-side requests through a demo import URL. The import_demo() function passes the demo_json_file POST value directly to wp_remote_get() without blocking internal or private destinations, then fetches image URLs from the attacker-controlled JSON response. A nonce exposed in frontend HTML removes the intended authentication gate, enabling blind access to internal services, localhost resources, or cloud metadata endpoints.

CVSS severity5.4
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

SSRF in WPDive Nexa Blocks 1.1.1 and earlier allows remote attackers to send server-side requests through a demo import URL. The import_demo() function passes the demo_json_file POST value directly to wp_remote_get() without blocking internal or private destinations, then fetches image URLs from the attacker-controlled JSON response. A nonce exposed in frontend HTML removes the intended authentication gate, enabling blind access to internal services, localhost resources, or cloud metadata endpoints.

The record

CVE
CVE-2026-6394
Published
May 20, 2026
Updated
May 20, 2026
Vendor
WPDive
Product
Nexa Blocks
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 20, 2026CVE publishedPublication date reported by the CVE source.
  2. May 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPDive · Nexa Blocksversion=0 <=1.1.1

Published CVSS scores

5.4WordfenceCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/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.

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

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo