CVE-2018-12423High· 7.5▾ TwilightMatrix Synapse Authorization Error
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.4 · exploitation 0
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Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
1.8%
1.8% → 1.8%
In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.
matrix-synapse < 0.31.2Upgrade to a patched release:
matrix-synapse 0.31.2Connected by shared product, vendor, weakness, or advisory.
CVE-2023-43796Medium· 5.3Synapse vulnerable to leak of remote user device information
CVE-2023-42453Low· 3.1matrix-synapse vulnerable to improper validation of receipts allows forged read receipts
CVE-2023-45129Medium· 4.9matrix-synapse vulnerable to denial of service due to malicious server ACL events
CVE-2023-41335Low· 3.7matrix-synapse vulnerable to temporary storage of plaintext passwords during password changes
CVE-2021-21274Medium· 4.3Denial of service attack via .well-known lookups
CVE-2023-32682Medium· 5.4Synapse has improper checks for deactivated users during login