8.6
HIGH
CVE-2022-39254
Matrix-NIO Unauthenticated Room Key Forging Vulnerability
Description

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 room key, they accept it without checking who the room key came from. This allows homeservers to try to insert room keys of questionable validity, potentially mounting an impersonation attack. Version 0.20 fixes the issue.

INFO

Published Date :

Sept. 29, 2022, 3:15 p.m.

Last Modified :

Nov. 21, 2024, 7:17 a.m.

Remotely Exploitable :

Yes !

Impact Score :

4.0

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2022-39254 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Matrix-nio_project matrix-nio
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2022-39254.

URL Resource
https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0 Patch Third Party Advisory
https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh Third Party Advisory
https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0 Patch Third Party Advisory
https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2022-39254 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2022-39254 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0
    Added Reference https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Jul. 13, 2023

    Action Type Old Value New Value
    Added CWE NIST NVD-CWE-Other
  • Initial Analysis by [email protected]

    Oct. 03, 2022

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0 No Types Assigned https://github.com/poljar/matrix-nio/commit/b1cbf234a831daa160673defd596e6450e9c29f0 Patch, Third Party Advisory
    Changed Reference Type https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh No Types Assigned https://github.com/poljar/matrix-nio/security/advisories/GHSA-w4pr-4vjg-hffh Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:matrix-nio_project:matrix-nio:*:*:*:*:*:*:*:* versions up to (excluding) 0.20
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} -0.04%

score

0.15330

percentile

CVSS31 - Vulnerability Scoring System
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Latest DB Update: May. 28, 2025 22:51