CVE-2026-75106

CriticalCVSS 9.1/10Last modified Oct 1, 2026

Description

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-340

Affected software

No affected versions have been published.

Timeline

Published: Aug 17, 2026
Last modified: Oct 1, 2026
NVD status: Deferred

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