{"cve":"CVE-2023-32682","nvd":{"published":"2023-06-06T19:15:11.743","modified":"2026-06-17T05:59:22.840","status":"Modified","description":"Synapse is a Matrix protocol homeserver written in Python with the Twisted framework. In affected versions it may be possible for a deactivated user to login when using uncommon configurations. This only applies if any of the following are true: 1. JSON Web Tokens are enabled for login via the `jwt_config.enabled` configuration setting. 2. The local password database is enabled via the `password_config.enabled` and `password_config.localdb_enabled` configuration settings *and* a user's password is updated via an admin API after a user is deactivated. Note that the local password database is enabled by default, but it is uncommon to set a user's password after they've been deactivated. Installations that are configured to only allow login via Single Sign-On (SSO) via CAS, SAML or OpenID Connect (OIDC); or via an external password provider (e.g. LDAP) are not affected. If not using JSON Web Tokens, ensure that deactivated users do not have a password set. This issue has been addressed in version 1.85.0. Users are advised to upgrade.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","score":5.4},"cwes":["CWE-287"],"references":["https://github.com/matrix-org/synapse/pull/15624","https://github.com/matrix-org/synapse/pull/15634","https://github.com/matrix-org/synapse/security/advisories/GHSA-26c5-ppr8-f33p","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X6DH5A5YEB5LRIPP32OUW25FCGZFCZU2/","https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#create-or-modify-account"],"products":["matrix:synapse"],"source":"nvd","synced_at":"2026-10-19T21:38:24.161619714+00:00"},"epss":{"cve":"CVE-2023-32682","score":0.00752,"percentile":0.55055,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-26c5-ppr8-f33p","url":"https://osv.dev/vulnerability/GHSA-26c5-ppr8-f33p","summary":"Synapse has improper checks for deactivated users during login","modified":"2026-09-10T03:50:02.042486864Z","packages":[{"ecosystem":"PyPI","name":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","ranges":["<1.85.0"],"fixed":["1.85.0"]}]},{"id":"PYSEC-2023-84","url":"https://osv.dev/vulnerability/PYSEC-2023-84","summary":"","modified":"2023-11-08T04:12:35.499722Z","packages":[{"ecosystem":"PyPI","name":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","ranges":["<1.85.0"],"fixed":["1.85.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}