CVE-2026-33185

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the group email settings test endpoint could be used to make the server initiate outbound connections to arbitrary hosts and ports. This could allow probing of internal network infrastructure. The endpoint was accessible to non-staff group owners. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/discourse/discourse/commit/e75cf456e8e318290c569bd6e8fa0f2586ffc530	Patch
https://github.com/discourse/discourse/security/advisories/GHSA-5976-77mj-m4h3	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:discourse:discourse:::::latest:::*
	cpe:2.3:a:discourse:discourse:::::latest:::*
	cpe:2.3:a:discourse:discourse:2026.3.0::::latest:::
	cpe:2.3:a:discourse:discourse:2026.3.0::::latest.1:::

History

No history.

Information

Published : 2026-03-31 18:16

Updated : 2026-07-24 20:10

NVD link : CVE-2026-33185

Mitre link : CVE-2026-33185

CVE.ORG link : CVE-2026-33185

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the group email settings test endpoint could be used to make the server initiate outbound connections to arbitrary hosts and ports. This could allow probing of internal network infrastructure. The endpoint was accessible to non-staff group owners. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0."}, {"lang": "es", "value": "Discourse es una plataforma de discusi\u00f3n de c\u00f3digo abierto. Desde las versiones 2026.1.0-latest hasta antes de la 2026.1.3, 2026.2.0-latest hasta antes de la 2026.2.2, y 2026.3.0-latest hasta antes de la 2026.3.0, el endpoint de prueba de configuraci\u00f3n de correo electr\u00f3nico de grupo podr\u00eda usarse para hacer que el servidor inicie conexiones salientes a hosts y puertos arbitrarios. Esto podr\u00eda permitir el sondeo de la infraestructura de red interna. El endpoint era accesible para los propietarios de grupo que no eran personal. Este problema ha sido parcheado en las versiones 2026.1.3, 2026.2.2 y 2026.3.0."}], "lastModified": "2026-07-24T20:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:latest:*:*:*", "vulnerable": true, "matchCriteriaId": "F64DA8FA-BC32-4EB9-B508-6425684D3245", "versionEndExcluding": "2026.1.3", "versionStartIncluding": "2026.1.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:latest:*:*:*", "vulnerable": true, "matchCriteriaId": "26546710-17B3-4C72-930F-3BE0AD969127", "versionEndExcluding": "2026.2.2", "versionStartIncluding": "2026.2.0"}, {"criteria": "cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*", "vulnerable": true, "matchCriteriaId": "E3FE9277-4F6B-4FD0-991F-F0FB8D226E1C"}, {"criteria": "cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest.1:*:*:*", "vulnerable": true, "matchCriteriaId": "DFA536C2-E9D9-4A03-89C2-C344DE682EA1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}