What’s Vulnerable › Vulnerabilities

CVE-2023-38685: Discourse's restricted tag information visible to unauthenticated users

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-28 · updated 2026-06-17
• Weakness: CWE-200

Description

Discourse is an open source discussion platform. Prior to version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches, information about restricted-visibility topic tags could be obtained by unauthorized users. The issue is patched in version 3.0.6 of the `stable` branch and version 3.1.0.beta7 of the `beta` and `tests-passed` branches.

Affected products

• discourse: before 3.0.6; 1.1.0-beta1, 1.1.0-beta2, 1.1.0-beta3, 1.1.0-beta4, 1.1.0-beta5, 1.1.0-beta6 (+205) — fixed in 3.0.6

How to fix

Upgrade to a fixed version: discourse 3.0.6. Check the vendor advisory for mitigations.

References

• https://github.com/discourse/discourse/commit/073661142369a0a66c25775cc3870582a679ef8b
• https://github.com/discourse/discourse/security/advisories/GHSA-wx6x-q4gp-mgv5
• https://github.com/discourse/discourse/commit/073661142369a0a66c25775cc3870582a679ef8b
• https://github.com/discourse/discourse/security/advisories/GHSA-wx6x-q4gp-mgv5

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