What is CVE-2022-39251?

CVE-2022-39251 is a high-severity vulnerability in Matrix-org Matrix-js-sdk, classified under Key Exchange without Entity Authentication. CVSS score: 8.6/10. Published 2022-09-28.

How severe is CVE-2022-39251?

High severity. CVSS v3 base score is 8.6 out of 10.

Is CVE-2022-39251 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Matrix-org Matrix-js-sdk

CVE-2022-39251

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without an…

EPSS: 0.003 (51.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N.

Affected products

Matrix-org Matrix-js-sdk — versions < 19.7.0

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-39251?: CVE-2022-39251 is a high-severity vulnerability in Matrix-org Matrix-js-sdk, classified under Key Exchange without Entity Authentication. CVSS score: 8.6/10. Published 2022-09-28.
How severe is CVE-2022-39251?: High severity. CVSS v3 base score is 8.6 out of 10.
Is CVE-2022-39251 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.