CVE-2026-46413

Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, regular users could route direct S3 multipart uploads through ExternalUploadManager into the admin backup store. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/discourse/discourse/commit/1f1ded8dd361d81786bff17b35e1138d6ee299c0	Patch
https://github.com/discourse/discourse/commit/7ddde266617b452152c1bf5f903f6c07be38fc40	Patch
https://github.com/discourse/discourse/commit/a53df26dcf7e50ce2b20bfd5454a0c9d44b8fc7d	Patch
https://github.com/discourse/discourse/commit/abaa664c5df84026efb2ca264ba0f5586c3f2b01	Patch
https://github.com/discourse/discourse/releases/tag/v2026.1.5	Release Notes
https://github.com/discourse/discourse/releases/tag/v2026.4.2	Release Notes
https://github.com/discourse/discourse/releases/tag/v2026.5.1	Release Notes
https://github.com/discourse/discourse/releases/tag/v2026.6.0	Release Notes
https://github.com/discourse/discourse/security/advisories/GHSA-3mvf-q9rg-w6m7	Vendor Advisory Mitigation

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:discourse:discourse::::::::
	cpe:2.3:a:discourse:discourse::::::::
	cpe:2.3:a:discourse:discourse::::::::
	cpe:2.3:a:discourse:discourse:2026.6.0::::latest:::

History

No history.

Information

Published : 2026-07-09 22:17

Updated : 2026-07-14 20:41

NVD link : CVE-2026-46413

Mitre link : CVE-2026-46413

CVE.ORG link : CVE-2026-46413

JSON object : View

Products Affected

discourse

discourse

CWE

CWE-862

Missing Authorization

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