PYSEC-2026-2620
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/matrix-sydent/PYSEC-2026-2620.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2620
- Aliases
- Published
- 2026-07-09T16:49:47.132995Z
- Modified
- 2026-07-13T16:42:32.863521797Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- matrix-sydent and matrix-synapse Use Cryptographically Weak PRNG
- Details
-
An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.
- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2019-11842
- https://github.com/advisories/GHSA-gwf7-vfjf-wf6x
- https://github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2019-185.yaml
- https://matrix.org/blog/2019/05/03/security-updates-sydent-1-0-3-synapse-0-99-3-1-and-riot-android-0-9-0-0-8-99-0-8-28-a
- https://pypi.org/project/matrix-sydent
Affected packages
PyPI / matrix-sydent
Package
- Name
- matrix-sydent
- View open source insights on deps.dev
- Purl
- pkg:pypi/matrix-sydent