CVSS 3.1 Score 4.3 of 10 (medium)


Published Apr 12, 2024
Updated: Apr 15, 2024
CWE ID 755
CWE ID 280


CVE-2024-32000 is a vulnerability affecting matrix-appservice-irc, a Node.js IRC bridge for the Matrix messaging protocol. This vulnerability, present in versions prior to 2.0.0, allows a malicious user to leak the truncated body of a message by sending a Matrix reply to an event ID they do not have access to. In order to exploit this vulnerability, the attacker needs to know the event ID of the message and be joined to both the Matrix room and the related IRC channel. The leaked message content is visible to members of the IRC channel. Upgrading to version 2.0.0 of matrix-appservice-irc addresses this issue by implementing permission checks before constructing a reply. Additionally, administrators can limit the amount of leaked information by setting a reply template that excludes the original message content. The potential danger posed by this vulnerability includes unauthorized disclosure of message content and potential privacy breaches within affected organizations.

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