CVE-2020-26547

Published: Feb 1, 2021Modified: Jun 17, 2026

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

Description

Monal before 4.9 does not implement proper sender verification on MAM and Message Carbon (XEP-0280) results. This allows a remote attacker (able to send stanzas to a victim) to inject arbitrary messages into the local history, with full control over the sender and receiver displayed to the victim.

Affected (1)

Products: Monal: Monal

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Monal Monal	Before 4.9

Related CWEs

Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (4)

https://github.com/anurodhp/Monal/commits/develop

Source: cve@mitre.org

Third Party Advisory

https://monal.im/blog/cve-2020-26547/

Source: cve@mitre.org

Vendor Advisory

https://github.com/anurodhp/Monal/commits/develop

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://monal.im/blog/cve-2020-26547/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.