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CVE-2019-5885 High

CVE-2019-5885

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.

Exploit probability 2.4%
Published March 21, 2019
Required by Not available
Last source change June 10, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

99 explicit affected versions

PyPI matrix-synapse

13 explicit affected versions

PyPI matrix-synapse

13 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2019-5885

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.

View original source
Open Source Vulnerabilities PYSEC-2019-187

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.

View original source
Open Source Vulnerabilities GHSA-jrqm-v8cv-53ww

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.

View original source

05 / REFERENCES

Further evidence