CVE-2026-92794: Missing Authorization in OpenSignLabs OpenSign
OpenSign through 2.41.3 fails to validate caller identity in the getDocument cloud function when one-time-password verification is disabled. Attackers can supply a document identifier from guest signing links to retrieve complete document details including all signers' information, sender identity, and valid download tokens without authentication.
AI Analysis
Technical Summary
CVE-2026-92794 describes a missing authorization vulnerability in OpenSign through version 2.41.3. Specifically, the getDocument cloud function does not validate the caller's identity if one-time-password verification is disabled. Attackers can exploit this by supplying a document identifier obtained from guest signing links to access complete document details, including all signers' information, sender identity, and valid download tokens, without any authentication.
Potential Impact
An unauthenticated attacker can access sensitive document information and valid download tokens, potentially compromising the confidentiality of documents and user identities. This could lead to unauthorized disclosure of private data related to document signers and senders.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should ensure one-time-password verification is enabled to mitigate unauthorized access via the getDocument function.
CVE-2026-92794: Missing Authorization in OpenSignLabs OpenSign
Description
OpenSign through 2.41.3 fails to validate caller identity in the getDocument cloud function when one-time-password verification is disabled. Attackers can supply a document identifier from guest signing links to retrieve complete document details including all signers' information, sender identity, and valid download tokens without authentication.
CVSS v4.0
Score 8.7high
Affected software
OpenSignLabs
OpenSign
pkg:github/opensignlabs/OpenSignRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-92794 describes a missing authorization vulnerability in OpenSign through version 2.41.3. Specifically, the getDocument cloud function does not validate the caller's identity if one-time-password verification is disabled. Attackers can exploit this by supplying a document identifier obtained from guest signing links to access complete document details, including all signers' information, sender identity, and valid download tokens, without any authentication.
Potential Impact
An unauthenticated attacker can access sensitive document information and valid download tokens, potentially compromising the confidentiality of documents and user identities. This could lead to unauthorized disclosure of private data related to document signers and senders.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should ensure one-time-password verification is enabled to mitigate unauthorized access via the getDocument function.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-16T19:40:20.554Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aab006355bf5e2cf5231fd0
Added to database: 09/16/2026, 20:47:31 UTC
Last enriched: 09/16/2026, 21:33:09 UTC
Last updated: 09/17/2026, 02:02:53 UTC
Views: 2
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