Vulnerability Description
Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected servers.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matrix | Synapse | < 1.5.0 |
Related Weaknesses (CWE)
References
- https://github.com/matrix-org/synapse/pull/6262PatchThird Party Advisory
- https://github.com/matrix-org/synapse/releases/tag/v1.5.0Release NotesThird Party Advisory
- https://github.com/matrix-org/synapse/pull/6262PatchThird Party Advisory
- https://github.com/matrix-org/synapse/releases/tag/v1.5.0Release NotesThird Party Advisory
FAQ
What is CVE-2019-18835?
CVE-2019-18835 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs. Events sent over /send_join, /send_leave, and /invite may not be correctly signed, or may not come from the expected ...
How severe is CVE-2019-18835?
CVE-2019-18835 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-18835?
Check the references section above for vendor advisories and patch information. Affected products include: Matrix Synapse.