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CVE-2026-92794NVD
Vulnerability Summary
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 Base Metrics — Score 8.7 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)None
Availability (Vulnerable System)None
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
CVSS v3.1 Base Metrics — Score 7.5 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
Affected & Patched Versions
- OpenSignLabs OpenSign <= 2.41.3
- OpenSignLabs OpenSign 2.41.3
External References
- https://github.com/OpenSignLabs/OpenSign/issues/2218
- https://github.com/OpenSignLabs/OpenSign
- https://github.com/OpenSignLabs/OpenSign/blob/v2.41.0/apps/OpenSignServer/cloud/parsefunction/getDocument.js#L20-L32
- https://www.vulncheck.com/advisories/opensign-through-2.41.3-information-disclosure-via-getdocument