CVE-2026-75106
Critical · CVSS 9.1- CVSS
- 9.1
- nvd
- EPSS
- 0.40%
- 32th pct
- KEV
- No
- Class
- oss containerizable
- CWE-340
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.
References
- https://github.com/OpnForm/OpnForm
- https://github.com/OpnForm/OpnForm/commit/6c67ff0a9bc0ac27ae26b32b8e108a176f8161b1
- 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-derivation-via-empty-hashids-salt
- https://github.com/OpnForm/OpnForm/issues/1259
Status: profiled · ingested 2026-09-25T00:00:19.000Z