What is CVE-2022-39254?

CVE-2022-39254 is a high-severity vulnerability in Poljar Matrix-nio, classified under Key Exchange without Entity Authentication. CVSS score: 8.6/10. Published 2022-09-29.

How severe is CVE-2022-39254?

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

Auth bypass in Poljar Matrix-nio

CVE-2022-39254

matrix-nio is a Python Matrix client library, designed according to sans I/O principles. Prior to version 0.20, when a users requests a room key from their devices, the software correctly remember the request. Once they receive a forwarded…

EPSS: 0.002 (48.0th 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

Poljar Matrix-nio — versions < 0.20

Weakness classification (CWE)

References

github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh (x_refsource_CONFIRM)
github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0 (x_refsource_MISC)

Frequently asked questions

What is CVE-2022-39254?: CVE-2022-39254 is a high-severity vulnerability in Poljar Matrix-nio, classified under Key Exchange without Entity Authentication. CVSS score: 8.6/10. Published 2022-09-29.
How severe is CVE-2022-39254?: High severity. CVSS v3 base score is 8.6 out of 10.