Vulnerability Intelligence Report
CVE-2019-18835
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:0.86%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| matrix | synapse | all |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.864%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | MITRE Corporation · N/A · USA |
| Reserved | 2019-11-07T00:00:00 |
| Published | 2019-11-07T23:12:07 |
| Last Updated | 2024-08-05T02:02:39 |
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