CVE-2026-46413CWE-862

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

Medium · published July 9, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
42.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00514 · 42.9th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-07-09T21:55Z
EPSS history
Timeline
  • 09 JUL 21:55Z
    Discourse: Regular users can route multipart uploads into the admin backup store
    cvelistv5