CVE-2026-72549
MEDIUM
NVD
CVSS Score
5.3
Severity
MEDIUM
Published
Aug 11, 2026
Vendor
unknown
Description
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to its internal user objectId via the getUserId Parse cloud function. The function performs no authentication before resolving and returning the internal identifier. An attacker can use this to enumerate user accounts and target subsequent attacks.