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Security Database

CVE

CWE

Training

CVE-2021-21332

Published: Mar 26, 2021

Modified: Aug 3, 2024

PUBLISHED

CVSS v3.1

6.9

MEDIUM

Description

Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.27.0, the password reset endpoint served via Synapse was vulnerable to cross-site scripting (XSS) attacks. The impact depends on the configuration of the domain that Synapse is deployed on, but may allow access to cookies and other browser data, CSRF vulnerabilities, and access to other resources served on the same domain or parent domains. This is fixed in version 1.27.0.

Vendor	Product	Versions
matrix-org	synapse	affected `< 1.27.0`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

References

https://github.com/matrix-org/synapse/security/advisories/GHSA-246w-56m2-5899

x_refsource_CONFIRM

https://github.com/matrix-org/synapse/releases/tag/v1.27.0

x_refsource_MISC

https://github.com/matrix-org/synapse/pull/9200

x_refsource_MISC

https://github.com/matrix-org/synapse/commit/e54746bdf7d5c831eabe4dcea76a7626f1de73df

x_refsource_MISC

FEDORA-2021-a627cfd31e

vendor-advisory

x_refsource_FEDORA

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