CVE-2026-75106OpnForm Editable Submission Secret Derivation via Empty Hashids Salt
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- Weakness (CWE)
- CWE-340
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OpnForm OpnForm opnform:opnform (from the name) | before 2.0.2 | CNA record |
References
- https://github.com/OpnForm/OpnForm/issues/1259issue-tracking
- https://github.com/OpnForm/OpnFormproduct
- https://github.com/OpnForm/OpnForm/commit/6c67ff0a9bc0ac27ae26b32b8e108a176f8161b1patch
- https://github.com/OpnForm/OpnForm/releases/tag/v2.0.2release-notes
- https://www.vulncheck.com/advisories/opnform-editable-submission-secret-derivation-via-empty-hashids-saltthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.