Vulnerability 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.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/OpnForm/OpnForm
- https://github.com/OpnForm/OpnForm/commit/6c67ff0a9bc0ac27ae26b32b8e108a176f8161
- https://github.com/OpnForm/OpnForm/issues/1259
- https://github.com/OpnForm/OpnForm/releases/tag/v2.0.2
- https://www.vulncheck.com/advisories/opnform-editable-submission-secret-derivati
- https://github.com/OpnForm/OpnForm/issues/1259
FAQ
What is CVE-2026-75106?
CVE-2026-75106 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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...
How severe is CVE-2026-75106?
CVE-2026-75106 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-75106?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.