CVE-2023-23624

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, someone can use the `exclude_tag param` to filter out topics and deduce which ones were using a specific hidden tag. This affects any Discourse site using hidden tags in public categories. This issue is patched in version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches. As a workaround, secure any categories that are using hidden tags, change any existing hidden tags to not include private data, or remove any hidden tags currently in use.

• CWE-200

• https://github.com/discourse/discourse/commit/f55e0fe7910149c431861c18ce407d1be0d6091aPatch
• https://github.com/discourse/discourse/pull/20006Issue Tracking, Patch
• https://github.com/discourse/discourse/security/advisories/GHSA-qgj5-g5vf-fm7qThird Party Advisory
• https://github.com/discourse/discourse/commit/f55e0fe7910149c431861c18ce407d1be0d6091aPatch
• https://github.com/discourse/discourse/pull/20006Issue Tracking, Patch
• https://github.com/discourse/discourse/security/advisories/GHSA-qgj5-g5vf-fm7qThird Party Advisory

Published

Jan 28, 2023

Last Modified

Jun 17, 2026

Status

Modified

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