CVE-2025-31478

Zulip is an open-source team collaboration tool. Zulip supports a configuration where account creation is limited solely by being able to authenticate with a single-sign on authentication backend, meaning the organization places no restrictions on email address domains or invitations being required to join, but has disabled the EmailAuthBackend that is used for email/password authentication. A bug in the Zulip server means that it is possible to create an account in such organizations, without having an account with the configured SSO authentication backend. This issue is patched in version 10.2. A workaround includes requiring invitations to join the organization prevents the vulnerability from being accessed.

The following products are affected by CVE-2025-31478 vulnerability.

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Here, you will find a curated list of external links that provide in-depth information to CVE-2025-31478.

URL	Resource
https://github.com/zulip/zulip/security/advisories/GHSA-qxfv-j6vg-5rqc