Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable value to derive a secret key and other secrets which could allow remote attackers to impersonate users.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Mar 19, 2019 | |
| Freebsd | freebsd-upgrade-package-py27-matrix-synapsefreebsd-upgrade-package-py35-matrix-synapsefreebsd-upgrade-package-py36-matrix-synapsefreebsd-upgrade-package-py37-matrix-synapse | Jan 16, 2019 | Jan 15, 2019 | |
| Ubuntu | ubuntu-pro-upgrade-matrix-synapse | May 17, 2023 | Mar 21, 2019 |
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