Privilege escalation in Formwork Project
CVE-2026-27198
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (42.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Formwork Project
- Getformwork Formwork — versions >= 2.0.0, < 2.3.4
Weakness classification (CWE)
References
- github.com/getformwork/formwork/security/advisories/GHSA-34p4-7w83-35g2 (Patch, Vendor Advisory)
- github.com/getformwork/formwork/commit/19390a0b408e084bdef86f3581e050f3ee51e7cd (Patch)
- github.com/getformwork/formwork/releases/tag/2.3.4 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-27198?
- CVE-2026-27198 is a high-severity vulnerability in Formwork Project, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-02-21.
- How severe is CVE-2026-27198?
- High severity. CVSS v3 base score is 8.8 out of 10.