CVE-2022-31041

Open Forms prior to versions 1.0.9 and 1.1.1 are affected by insufficient input validation for uploaded files, allowing end users to bypass extension-based checks by stripping or altering file extensions. This can lead to uploaded files being misrepresented as another type and potentially downloa...

CVE-2024-24771

Open Forms CVE-2024-24771 affects multiple versions prior to 2.2.9, 2.3.7, 2.4.5, and 2.5.2, with a non-exploitable MFA weakness that could allow a second-factor bypass if a superuser’s credentials are compromised. Attack could let the attacker view sensitive submissions or impersonate staff if b...

CVE-2022-31040

CVE-2022-31040 affects Open Forms before versions 1.0.9 and 1.1.1, where the cookie consent page contains an open redirect via an injectable referer query parameter. The issue enables phishing redirects initiated by the Open Forms backend on a legitimate page. Connected sources confirm patches in...

CVE-2026-28803

CVE-2026-28803 affects Open Forms with cosign flow prior to versions 3.3.13 and 3.4.5. The vulnerability allows a logged-in user to implicitly retrieve arbitrary submissions by guessing/modifying the cosign code received by email, enabling access to submission references during cosign flow. The i...

CVE-2025-64515

Open Forms (Open Formulieren) is affected prior to versions 3.2.7 and 3.3.3 where prefill data fields that are dynamically set to readonly/disabled could be tampered with by malicious users. The underlying issue is that these fields can be modified despite a UI restriction, enabling data tamperin...