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CVE Record

CVE-2026-0911: Hustle <= 7.8.9.2 - Authenticated (Subscriber+) Arbitrary File Upoload via Module Import

The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the action_import_module() function in all versions up to, and including, 7.8.9.2. This makes it possible for authenticated attackers, with a lower-privileged role (e.g., Subscriber-level access and above), to upload arbitrary files on the affected site's server which may make remote code execution possible. Successful exploitation requires an admin to grant Hustle module permissions (or module edit access) to the low-privileged user so they can access the Hustle admin page and obtain the required nonce.

HighCVSS 7.5Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This flaw affects the Hustle WordPress plugin and can let a logged-in low-privileged user upload arbitrary files if they have been granted Hustle module access. That could lead to full site compromise. The issue is serious, but exploitation depends on specific permissions being granted inside the plugin.

Executive priority

Prioritize remediation on internet-facing WordPress sites where Hustle is installed and non-admin users have plugin module access. Treat as high risk because arbitrary upload can enable site takeover.

Technical view

CVE-2026-0911 is an authenticated arbitrary file upload vulnerability in Hustle’s action_import_module() function, caused by incorrect file type validation. Versions up to and including 7.8.9.2 are described as affected. CVSS is 7.5. Successful exploitation requires Subscriber-level or higher access plus Hustle module permissions or module edit access to obtain the required nonce.

Likely exposure

Public WordPress sites using Hustle versions up to 7.8.9.2 are potentially exposed, especially where non-admin users have Hustle module permissions.

Exploitation context

No CISA KEV listing or cited source confirms active exploitation. The attack is not anonymous; it requires authentication and specific Hustle permissions granted by an administrator.

Researcher notes

The key exposure condition is permission-dependent: authenticated Subscriber+ users also need Hustle module permissions or edit access and a valid nonce. Sources identify CWE-434 and a WordPress Trac changeset, but the bundle does not name a specific fixed version.

Mitigation direction

  • Inventory WordPress sites using the Hustle plugin.
  • Identify installations running Hustle 7.8.9.2 or earlier.
  • Review vendor guidance and update to a non-vulnerable release when available.
  • Remove Hustle module permissions from low-privileged users unless required.
  • Limit plugin administration access to trusted roles only.

Validation and detection

  • Check installed Hustle plugin versions across WordPress environments.
  • Review which users have Hustle module or module edit permissions.
  • Confirm Subscriber-level users cannot access Hustle import functionality.
  • Review recent Hustle module import activity for unexpected uploads.
  • Monitor web-accessible upload paths for suspicious newly added files.
Prepared
Confidence
medium
Sources
4

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · medium confidence lookup

CWE-434: File access and web shell behavior lookup

File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

Open ATT&CK lookup
description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2026-0911 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H1.65.9Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2026-0911Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wpmudevHustle – Email Marketing, Lead Generation, Optins, Popups0unaffected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-434 · source CWE mapping

Unrestricted Upload of File with Dangerous Type

Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.