CVE-2026-27198Network attack vector

Editor-to-Administrator escalation via unchecked role assignment

Published Feb 21, 2026 · Updated Feb 21, 2026

Privilege escalation in Formwork 2.0.0 through 2.3.3 allows remote authenticated users with the editor role to gain administrative access. UsersController::create checks only that the submitted role exists, then assigns it without comparing the role with the current user's privileges. Editor access is sufficient to create an administrator account that can read site data, alter configuration, and manage all CMS users.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Formwork 2.0.0 through 2.3.3 allows remote authenticated users with the editor role to gain administrative access. UsersController::create checks only that the submitted role exists, then assigns it without comparing the role with the current user's privileges. Editor access is sufficient to create an administrator account that can read site data, alter configuration, and manage all CMS users.

The record

CVE
CVE-2026-27198
Published
Feb 21, 2026
Updated
Feb 21, 2026
Vendor
Formwork
Product
Formwork
Classifications
CWE-269, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 21, 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=>= 2.0.0, < 2.3.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Formwork · Formworkversion=>= 2.0.0, < 2.3.4

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1098Account Manipulation

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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Your stack

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