CVE-2026-46413

MEDIUM

Discourse: Regular users can route multipart uploads into the admin backup store

Title source: cna
STIX 2.1

Description

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.

References (9)

Core 9
Core References

Scores

CVSS v3 6.5
EPSS 0.0037
EPSS Percentile 28.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (3)
discourse/discourse >= 2026.1.0-latest, < 2026.1.5
discourse/discourse >= 2026.4.0-latest, < 2026.4.2
discourse/discourse >= 2026.5.0-latest, < 2026.5.1
Published Jul 09, 2026
Tracked Since Jul 10, 2026