What is CVE-2022-39200?

CVE-2022-39200 is a high-severity vulnerability in Matrix Dendrite, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.3/10. Published 2022-09-12.

How severe is CVE-2022-39200?

High severity. CVSS v3 base score is 7.3 out of 10.

Vulnerability in Matrix Dendrite

CVE-2022-39200

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 home…

EPSS: 0.003 (21.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Matrix Dendrite
Matrix-org Dendrite — versions < 0.9.8

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2022-39200?: CVE-2022-39200 is a high-severity vulnerability in Matrix Dendrite, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.3/10. Published 2022-09-12.
How severe is CVE-2022-39200?: High severity. CVSS v3 base score is 7.3 out of 10.