CVE-2025-64515

Open Forms prefill data in read-only components can be tampered

CVSS 4.3 MEDIUMEPSS 0.2%CWE-20

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

18 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

open-formulieren · open-forms

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References

https://github.com/open-formulieren/open-forms/blob/bcf2dc54c695fb7c8c58712627d82c4b766248b6/CHANGELOG.rst#327-2025-11-18 https://github.com/open-formulieren/open-forms/blob/bcf2dc54c695fb7c8c58712627d82c4b766248b6/CHANGELOG.rst#333-2025-11-18 https://github.com/open-formulieren/open-forms/security/advisories/GHSA-cp63-63mq-5wvf