🛡️ CVE-2022-39200
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-347 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the `/get_missing_events` path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this endpoint. Note that this does not apply to events retrieved through other endpoints (e.g. `/event`, `/state`) as they have been correctly verified. Homeservers that have federation disabled are not vulnerable. The problem has been fixed in Dendrite 0.9.8. Users are advised to upgrade. There are no known workarounds for this issue.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE CWE-347
Public Exploit ✅ No
Source NVD
Published 2022-09-12
Updated 2026-06-15
Modified 2024-11-21

Affected Packages

Software From version Fixed in
dendrite 0.9.8
github.com/matrix-org/dendrite

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