Is CVE-2019-11842 actively exploited?

CVE-2019-11842 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2019-11842?

CVE-2019-11842 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

How do I patch CVE-2019-11842?

Patch guidance is available from matrix security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-11842.

Which products are affected by CVE-2019-11842?

2 products: matrix sydent, matrix synapse.

Fix CVE-2019-11842 - HIGH matrix sydent

Description

An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1. Random number generation is mishandled, which makes it easier for attackers to predict a Sydent authentication token or a Synapse random ID.

CVSS Metrics

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none
Weaknesses: CWE-338

Metadata

Primary Vendor: MATRIX
Published: 5/9/2019
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

matrix : sydentmatrix : synapse

Remediation Guidance

Executive Summary

Cite this page

CVE-2019-11842. CVEDatabase.com. Retrieved 3 May 2026. https://cvedatabase.com/cve/CVE-2019-11842

View on NIST NVD

CVE-2019-11842 vulnerability