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CVE-2026-75106— OpnForm Editable Submission Secret Derivation via Empty Hashids Salt

Quick assessment

Affected
OpnForm OpnForm
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpnForm是OpnForm组织的一款表单创建工具。 OpnForm 2.0.2之前版本存在加密问题漏洞，该漏洞源于使用空默认盐的Hashids从顺序行标识符派生可编辑提交密钥，导致未认证攻击者可计算任意提交的哈希，通过submission-fetch端点读取其他受访者的完整提交数据，或通过提供预测的哈希覆盖提交。

CVSS 9.1 · Critical EPSS 0.30% · P23

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpnForm OpnForm < 2.0.2 affected
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I. Basic Information for CVE-2026-75106

Vulnerability Information
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Vulnerability Title
OpnForm Editable Submission Secret Derivation via Empty Hashids Salt
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
可预测问题
Source: CVE Program / CVE List V5
Vulnerability Title
OpnForm 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpnForm是OpnForm组织的一款表单创建工具。 OpnForm 2.0.2之前版本存在加密问题漏洞，该漏洞源于使用空默认盐的Hashids从顺序行标识符派生可编辑提交密钥，导致未认证攻击者可计算任意提交的哈希，通过submission-fetch端点读取其他受访者的完整提交数据，或通过提供预测的哈希覆盖提交。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpnForm OpnForm 0 ~ 2.0.2 -

II. Public POCs for CVE-2026-75106

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7974 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-75106

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Patches & Fixes for CVE-2026-75106 (2)

Vendor Advisories for CVE-2026-75106 (2)

Other References for CVE-2026-75106 (1)

IV. Related Vulnerabilities

Same product: OpnForm
Same weakness: CWE-340

V. Comments for CVE-2026-75106

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