TI-2026-21635 Aliases CVE-2026-27198 GHSA-34p4-7w83-35g2

Formwork Improperly Manages Privileges During User Creation

MEDIUM 40CWE-269Published 2026-02-21 · Updated 2026-02-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Privilege escalation
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269.

Summary

Formwork is a flat file-based Content Management System (CMS). In versions 2.0.0 through 2.3.3, the application fails to properly enforce role-based authorization during account creation. Although the system validates that the specified role exists, it does not verify whether the current user has sufficient privileges to assign highly privileged roles such as admin. As a result, an authenticated user with the editor role can create a new account with administrative privileges, leading to full administrative access and complete compromise of the CMS. This issue has been fixed in version 2.3.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00458 39th percentileScored 2026-11-07

Fix Fixed formwork (getformwork): 2.3.4getformwork/formwork (Packagist): 2.3.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
getformwork	formwork	2.0.0 to before 2.3.4	2.3.4	Patch available	CNA
—	getformwork/formwork (Packagist)	2.0.0 to before 2.3.4	2.3.4	Patch available	GHSA-34p4-7w83-35g2

formwork Vendorgetformwork Affected 2.0.0 to before 2.3.4 Fixed in 2.3.4 Patch available CNA
getformwork/formwork (Packagist) Vendor— Affected 2.0.0 to before 2.3.4 Fixed in 2.3.4 Patch available GHSA-34p4-7w83-35g2

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:formwork_project:formwork::::::::	2.0.0 to before 2.3.4	Vulnerable	getformwork

cpe:2.3:a:formwork_project:formwork:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.3.4 Vulnerable ·getformwork

Remediation

Fix · CNA formwork (getformwork) Fixed in 2.3.4
Fix · GHSA-34p4-7w83-35g2 getformwork/formwork (Packagist) Fixed in 2.3.4 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-27198
2026-10-03 Alias added: GHSA-34p4-7w83-35g2

References

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-27198

Other 2

TI-2025-40524 Formwork CMS Has a Stored Cross-Site Scripting (XSS) Vulnerability in Blog Tags CVSS 3.1MEDIUM 6.5
TI-2023-09940 A stored cross-site scripting (XSS) vulnerability in the component… CVSS 3.1MEDIUM 4.8
TI-2024-24687 Formwork has a Cross-site scripting (XSS) vulnerability in Description metadata CVSS 3.1MEDIUM 4.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences