CVE-2026-72689
OpenSignLabs opensignserver - Broken Object Level Authorization
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration.
| CWE | CWE-639 |
| Vendor | opensignlabs |
| Product | opensignserver |
| Published | Aug 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
OpenSignLabs / opensignserver
0 ≤ 2.37.0
Credits
Bobur Abdugafforov (Mahadsec)