medium5.3
CVE-2026-72549
An information disclosure vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to map any email address or username to…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| OpenSignLabs OpenSign | through 2.37.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.