Discourse is an open-source discussion platform. Prior to versions 3.4.3 on the stable branch and 3.5.0.beta3 on the beta branch, the users limit for a DM can be bypassed, thus giving the ability to potentially create a DM with every user from a site in it. This issue has been patched in stable version 3.4.3 and beta version 3.5.0.beta3.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.3, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts limited integrity, for affected systems. Impacting 1 product from discourse organizations running these solutions should prioritize assessment and patching.
Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2025-04-30T15:16:01.217
2025-05-16T16:28:51.820
Analyzed
CVSSv3.1: 4.3 (MEDIUM)
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | discourse | discourse | < 3.4.3 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.1.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.2.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.3.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.4.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.5.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.6.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.7.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.8.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 1.9.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.0.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.1.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.2.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.3.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.4.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.5.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.6.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.7.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.8.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 2.9.0 | Yes |
| Application | discourse | discourse | 3.0.0 | Yes |
| Application | discourse | discourse | 3.0.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.1.0 | Yes |
| Application | discourse | discourse | 3.2.0 | Yes |
| Application | discourse | discourse | 3.2.0 | Yes |
| Application | discourse | discourse | 3.2.0 | Yes |
| Application | discourse | discourse | 3.2.0 | Yes |
| Application | discourse | discourse | 3.2.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.3.0 | Yes |
| Application | discourse | discourse | 3.4.0 | Yes |
| Application | discourse | discourse | 3.4.0 | Yes |
| Application | discourse | discourse | 3.4.0 | Yes |
| Application | discourse | discourse | 3.4.0 | Yes |
| Application | discourse | discourse | 3.5.0 | Yes |
| Application | discourse | discourse | 3.5.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For discourse's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.