vulnerability
Ubuntu: USN-6076-1 (CVE-2019-18835): Synapse vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Nov 8, 2019 | May 17, 2023 | Mar 27, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Nov 8, 2019
Added
May 17, 2023
Modified
Mar 27, 2026
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.
Solution
ubuntu-pro-upgrade-matrix-synapse
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