CVE-2026-80440Public exploitNetwork attack vector

Unauthenticated shortcode execution via nested form values

Published Sep 9, 2026 · Updated Sep 9, 2026

Shortcode injection in WPMU DEV Hustle before 7.8.14.2 allows remote attackers to execute registered shortcodes through form submissions. The success-message placeholder path substitutes submitted values, then processes nested shortcode syntax after its guard fails to neutralize it. No authentication is required; the installed shortcode handlers determine which site data or actions become reachable.

CVSS severity4.8
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Shortcode injection in WPMU DEV Hustle before 7.8.14.2 allows remote attackers to execute registered shortcodes through form submissions. The success-message placeholder path substitutes submitted values, then processes nested shortcode syntax after its guard fails to neutralize it. No authentication is required; the installed shortcode handlers determine which site data or actions become reachable.

The record

CVE
CVE-2026-80440
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
WPMU DEV
Product
Hustle
Classifications
CWE-74, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=7.0.0.1 <7.8.14.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPMU DEV · Hustleversion=7.0.0.1 <7.8.14.2

Published CVSS scores

4.8WPScanCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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