CVE-2025-64528 (GCVE-0-2025-64528)
Vulnerability from cvelistv5 – Published: 2025-12-30 16:04 – Updated: 2025-12-30 18:11
VLAI
EPSS
VEX
Title
Users are able to find users by name even when `enable_names` is off
Summary
Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when `enable_names` is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-30 18:10 UTC
CWE
- CWE-202 - Exposure of Sensitive Information Through Data Queries
Assigner
GitHub_M
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/discourse/discourse/security/a… | x_refsource_CONFIRM |
| https://github.com/discourse/discourse/commit/1cb… | x_refsource_MISC |
| https://github.com/discourse/discourse/commit/619… | x_refsource_MISC |
| https://github.com/discourse/discourse/commit/e93… | x_refsource_MISC |
Impacted products
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Nomenclature
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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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