Open Forms prefill data in read-only components can be tampered
Priority LOW 20CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
Open Forms allows users create and publish smart forms. Prior to versions 3.2.7 and 3.3.3, forms where the prefill data fields are dynamically set to readonly/disabled can be modified by malicious users deliberately trying to modify data they're not supposed to. For regular users, the form fields are marked as readonly and cannot be modified through the user interface. This issue has been patched in versions 3.2.7 and 3.3.3.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00281 20th percentileScored 2026-11-07
Fix Fixed open-forms (open-formulieren): 3.3.3, 3.2.7
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
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 |
|---|---|---|---|---|---|
| open-formulieren | open-forms | 3.3.0 to before 3.3.3; before 3.2.7 | 3.3.3, 3.2.7 | Patch available | CNA |
- open-forms Vendoropen-formulieren Affected 3.3.0 to before 3.3.3; before 3.2.7 Fixed in 3.3.3, 3.2.7 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:maykinmedia:open_forms:*:*:*:*:*:*:*:* | before 3.2.7; 3.3.0 to before 3.3.3 | Vulnerable | open-formulieren |
- cpe:2.3:a:maykinmedia:open_forms:*:*:*:*:*:*:*:* Versions before 3.2.7; 3.3.0 to before 3.3.3 Vulnerable ·open-formulieren
Remediation
- Fix · CNA open-forms (open-formulieren) Fixed in 3.3.3, 3.2.7
Timeline
- 2026-10-02 Threatist record created from CVE-2025-64515
References
More open-formulieren Open Forms vulnerabilities
- TI-2024-16288 Open Forms potential multi-factor authentication bypass CVSS 3.1HIGH 7.7
- TI-2022-13086 Insufficient content-type validation for uploaded files in open-forms CVSS 3.1HIGH 7.6
- TI-2022-13085 Open Redirect in open-forms CVSS 3.1HIGH 7.1
- TI-2026-22997 Open Forms possible to view submission details of other people than intended CVSS 3.1MEDIUM 6.5
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences