CVE-2018-16515
Matrix Synapse Improper Signature Validation
8.8
HIGH
CVSS 3.1
EPSS 0.44%
Description
Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by leveraging improper transaction and event signature validation.
How to fix CVE-2018-16515
To remediate CVE-2018-16515, upgrade the affected package to a fixed version below.
- Debian/matrix-synapse—upgrade to 0.33.3.1-1 or later
- —upgrade to 0.33.3.1 or later
Is CVE-2018-16515 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 0.33.3.1-1
- >= 0.33.3, < 0.33.3.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |