CVE-2026-92794Public exploitNetwork attack vector

Unauthenticated document disclosure via unchecked identifier

Published Sep 16, 2026 · Updated Sep 17, 2026

Missing authorization in OpenSign 2.41.3 and earlier allows remote attackers to retrieve document details and download tokens. The getDocument cloud function queries contracts_Document with useMasterKey enabled and returns the full object without authenticating the caller or confirming an invited signer. A document identifier from a guest-signing link is sufficient when IsEnableOTP is false, the default, exposing signer and sender identities, tenant data, audit details, and access to the PDF.

CVSS severity8.7
High
EPSS probability0.59%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in OpenSign 2.41.3 and earlier allows remote attackers to retrieve document details and download tokens. The getDocument cloud function queries contracts_Document with useMasterKey enabled and returns the full object without authenticating the caller or confirming an invited signer. A document identifier from a guest-signing link is sufficient when IsEnableOTP is false, the default, exposing signer and sender identities, tenant data, audit details, and access to the PDF.

The record

CVE
CVE-2026-92794
Published
Sep 16, 2026
Updated
Sep 17, 2026
Vendor
OpenSignLabs
Product
OpenSign
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.41.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenSignLabs · OpenSignversion=0 <=2.41.3

Published CVSS scores

7.5GitHub issue #2218CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
8.7VulnCheck CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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