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 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.

• CWE-200

• https://github.com/OpenSignLabs/OpenSign

Published

Aug 11, 2026

Last Modified

Aug 11, 2026

Status

Received

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-72543An insecure direct object reference vulnerability in OpenSig…7.5
• CVE-2026-72544An integrity verification vulnerability in OpenSignLabs Open…7.5
• CVE-2026-72545An insecure direct object reference vulnerability in OpenSig…7.5
• CVE-2026-72546An insecure direct object reference vulnerability in Attendi…7.1
• CVE-2026-72547An insecure direct object reference vulnerability in Attendi…7.1
• CVE-2026-72548An information disclosure vulnerability in OpenSignLabs Open…7.5
• CVE-2026-7255** UNSUPPORTED WHEN ASSIGNED ** An improper restriction of e…6.5
• CVE-2026-72550An SQL injection vulnerability in Friendica through the 2026…9.8
• CVE-2026-72551A remote code execution vulnerability in Apioo Fusio 8.8.3 a…8.8
• CVE-2026-72552A server-side request forgery vulnerability in Dub as of 202…7.5
• CVE-2026-72553A stored cross-site scripting vulnerability in ElkArte Forum…5.4
• CVE-2026-72554A broken access control vulnerability in Ladybird Web Soluti…6.5