vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-72549

OpenSignLabs OpenSign - Information Disclosure

MEDIUM
5.3
CVSS Score
Published: August 11, 2026 at 11:10 AM UTC
Updated: October 24, 2026 at 03:10 PM UTC
1 product affected across 1 vendorOpenSign

Using OpenSign by OpenSignLabs?

Get instant alerts when new vulnerabilities affect OpenSign - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

OpenSign· Opensignlabs
90%
0 ≤ v ≤ 2.37.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://github.com/OpenSignLabs/OpenSign

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMTuranSec
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-200

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card