CVE-2023-23622 (GCVE-0-2023-23622)
Vulnerability from cvelistv5 – Published: 2023-03-17 14:17 – Updated: 2025-02-25 14:54
VLAI
EPSS
VEX
Title
Discourse: Presence of read restricted topics may be leaked if tagged with a tag that is visible to all users
Summary
Discourse is an open-source discussion platform. Prior to version 3.0.1 of the `stable` branch and version 3.1.0.beta2 of the `beta` and `tests-passed` branches, the count of topics displayed for a tag is a count of all regular topics regardless of whether the topic is in a read restricted category or not. As a result, any users can technically poll a sensitive tag to determine if a new topic is created in a category which the user does not have excess to.
In version 3.0.1 of the `stable` branch and version 3.1.0.beta2 of the `beta` and `tests-passed` branches, the count of topics displayed for a tag defaults to only counting regular topics which are not in read restricted categories. Staff users will continue to see a count of all topics regardless of the topic's category read restrictions.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-25 14:29 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
GitHub_M
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/discourse/discourse/security/a… | x_refsource_CONFIRM |
| https://github.com/discourse/discourse/pull/20004 | x_refsource_MISC |
| https://github.com/discourse/discourse/pull/20005 | x_refsource_MISC |
| https://github.com/discourse/discourse/commit/105… | x_refsource_MISC |
| https://github.com/discourse/discourse/commit/ecb… | x_refsource_MISC |
Impacted products
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"title": "Discourse: Presence of read restricted topics may be leaked if tagged with a tag that is visible to all users"
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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