Vulnerability · Published Nov 18, 2025 · Assigned by GitHub_M
CVE-2025-64515Open Forms prefill data in read-only components can be tampered
Medium 4.3
In plain English
A medium-severity improper input validation in open-forms from open-formulieren. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| open-formulieren | open-forms | >= 3.3.0, < 3.3.3< 3.2.7 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/open-formulieren/open-forms/security/advisories/GHSA-cp63-63mq-5wvf x_refsource_CONFIRM
- https://github.com/open-formulieren/open-forms/blob/bcf2dc54c695fb7c8c58712627d82c4b766248b6/CHANGELOG.rst#327-2025-11-18 x_refsource_MISC
- https://github.com/open-formulieren/open-forms/blob/bcf2dc54c695fb7c8c58712627d82c4b766248b6/CHANGELOG.rst#333-2025-11-18 x_refsource_MISC