Vulnerabilities > Matrix > Synapse > High
| DATE | CVE | VULNERABILITY TITLE | RISK |
|---|---|---|---|
| 2022-09-02 | CVE-2022-31152 | Improper Handling of Exceptional Conditions vulnerability in Matrix Synapse Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. | 7.5 |
| 2021-11-23 | CVE-2021-41281 | Path Traversal vulnerability in multiple products Synapse is a package for Matrix homeservers written in Python 3/Twisted. | 7.5 |
| 2021-03-26 | CVE-2021-21332 | Cross-site Scripting vulnerability in multiple products Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). | 8.2 |
| 2020-11-24 | CVE-2020-26890 | Improper Input Validation vulnerability in multiple products Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attack against the federation and common Matrix clients. | 7.5 |
| 2019-05-09 | CVE-2019-11842 | Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) vulnerability in Matrix Sydent and Synapse An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. | 7.5 |
| 2019-03-21 | CVE-2019-5885 | Use of Insufficiently Random Values vulnerability in multiple products 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. | 7.5 |
| 2018-09-18 | CVE-2018-16515 | Improper Verification of Cryptographic Signature vulnerability in multiple products Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation. | 8.8 |
| 2018-06-14 | CVE-2018-12423 | Unspecified vulnerability in Matrix Synapse In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force. | 7.5 |
| 2018-06-13 | CVE-2018-12291 | Unspecified vulnerability in Matrix Synapse The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in the get_missing_events federation API where event visibility rules were not applied correctly. | 7.5 |
| 2018-05-02 | CVE-2018-10657 | Improper Input Validation vulnerability in Matrix Synapse Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018. | 7.5 |