CVE-2022-31095: Exposure of Sensitive Information in discourse-chat

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-21 · updated 2026-06-17
Weakness: CWE-200

Description

discourse-chat is a chat plugin for the Discourse application. Versions prior to 0.4 are vulnerable to an exposure of sensitive information, where an attacker who knows the message ID for a channel they do not have access to can view that message using the chat message lookup endpoint, primarily affecting direct message channels. There are no known workarounds for this issue, and users are advised to update the plugin.

Affected products

discourse-chat: before 0.4 — fixed in 0.4

How to fix

Upgrade to a fixed version: discourse-chat 0.4. Check the vendor advisory for mitigations.

References

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