CVE-2026-75106
CriticalCVSS 9.1Summary
OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through the submission-fetch endpoint or overwrite submissions by supplying predicted hashes to the answer endpoint.
Risk Assessment
The risk is the compromise of confidentiality and integrity of submission data, which may lead to data leakage or manipulation.
Recommendation
It is recommended to change the default Hashids salt to a unique and strong value and apply vendor patches.
Original NVD description (English source)
OpnForm derives editable-submission secrets from sequential row identifiers using Hashids with an empty default salt, allowing unauthenticated attackers to compute hashes for any submission. Attackers can read other respondents' full submission data through the submission-fetch endpoint or overwrite submissions by supplying predicted hashes to the answer endpoint.