CVE-2024-24755: discourse-group-membership-ip-block is exposing potentially sensitive custom fields

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-02-01 · updated 2026-06-17
Weakness: CWE-200

Description

discourse-group-membership-ip-block is a discourse plugin that adds support for adding users to groups based on their IP address. discourse-group-membership-ip-block was sending all group custom fields to the client, including group custom fields from other plugins which may expect their custom fields to remain secret.

Affected products

discourse-group-membership-ip-block: all versions

References

https://github.com/discourse/discourse-group-membership-ip-block/commit/b394d61b0bdfd18a2d8310aa5cf26cccf8bd31c1
https://github.com/discourse/discourse-group-membership-ip-block/security/advisories/GHSA-r38c-cp8w-664m
https://github.com/discourse/discourse-group-membership-ip-block/commit/b394d61b0bdfd18a2d8310aa5cf26cccf8bd31c1
https://github.com/discourse/discourse-group-membership-ip-block/security/advisories/GHSA-r38c-cp8w-664m

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