Insecure Direct Object Reference in OpenSignLabs OpenSign Affects Data Integrity
CVE-2026-72545

7.5HIGH

Key Information:

Vendor

Opensignlabs

Status
Opensign
Vendor
CVE Published:
11 August 2026

What is CVE-2026-72545?

An insecure direct object reference (IDOR) vulnerability in OpenSignLabs OpenSign allows unauthenticated remote attackers to manipulate contact records via the updatecontacttour Parse cloud function. This flaw permits unauthorized users to overwrite contact data of any account, leading to potential corruption of sensitive information without the need for valid credentials.

Affected Version(s)

OpenSign 0 <= 2.37.0

References

https://github.com/OpenSignLabs/OpenSign

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bobur Abdugafforov (Mahadsec)
.