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.

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Fixes

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References
History

Tue, 11 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Aug 2026 11:30:00 +0000

Type Values Removed Values Added
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.
Title OpenSignLabs OpenSign - Information Disclosure
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: TuranSec

Published:

Updated: 2026-08-11T15:09:18.816Z

Reserved: 2026-08-10T10:32:49.081Z

Link: CVE-2026-72549

cve-icon Vulnrichment

Updated: 2026-08-11T15:09:14.217Z

cve-icon NVD

Status : Received

Published: 2026-08-11T12:17:40.483

Modified: 2026-08-11T16:17:35.250

Link: CVE-2026-72549

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses