# CVE-2023-32682: Matrix Synapse improper deactivated user checks during login

Source: https://junglewise.ai/threats/cve-2023-32682-matrix-synapse-improper-deactivated-user-checks-during-login  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-06-06. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2023-32682 · Severity: low · CVSS 3.1 · Published 2023-06-06

Matrix Synapse is an open-source server implementation for the Matrix protocol, used to host real-time communication networks. A flaw in deactivated user validation allows deactivated accounts to regain access under specific configurations (JWT-based login or when admin-modified passwords exist on deactivated accounts), potentially enabling unauthorized access to messaging infrastructure.

Technologies: [matrix-synapse (PyPI)](https://junglewise.ai/threats/technologies/matrix-synapse). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-32682 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-32682 being exploited in the wild.

**How severe is CVE-2023-32682?** Low severity, with a CVSS score of 3.1, published 6 June 2023.

**Which products and versions are affected?** matrix-synapse (PyPI) ECOSYSTEM:introduced=0,fixed=1.85.0.

**Is there a fix for CVE-2023-32682?** Yes. matrix-synapse (PyPI): upgrade to 1.85.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2023-32682 attacked?** It is attacked over the network.

**Am I affected by CVE-2023-32682?** Check whether you run matrix-synapse (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- matrix-synapse (PyPI): upgrade to 1.85.0 or later

  ```sh
  pip install "matrix-synapse>=1.85.0"
  ```


## Technical details

The vulnerability is an authentication bypass (CWE-287) affecting Synapse's login validation logic for deactivated user accounts. The flaw manifests under two configurations: (1) when JSON Web Token (JWT) login is enabled via jwt_config.enabled, or (2) when local password authentication is enabled and a deactivated user's password was reset via the admin API after deactivation. The attack requires no special privileges and is exploitable via the network at login time. A threat actor can authenticate as a deactivated user, gaining full access to that account. Installations using only SSO (CAS, SAML, OIDC) or external password providers (LDAP) are unaffected. Patches are available in version 1.85.0 and later.

## Affected products

- Matrix.org Synapse before 1.85.0

## Identifiers

- CVE-2023-32682
- GHSA-26c5-ppr8-f33p
- PYSEC-2023-84

## Timeline

- 2023-06-06: disclosed
- 2023-06-06: patched: Version 1.85.0 released

## References

- [https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p](https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p)

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- [PYSEC-2026-1611 - Synapse allows a a malformed invite to break the invitee's `/sync`](https://junglewise.ai/threats/cve-2024-52815-synapse-allows-a-a-malformed-invite-to-break-the-invitee-s-sync)