CVE-2026-45788CWE-200

Discourse: Secure uploads exposed by hotlinked image copying

Medium · published July 9, 2026

CVSS v4.0
6.3
EPSS
1%
Percentile
49.7
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, secure uploads could be exposed by pull_hotlinked_images when an attacker knew the secured upload URL and the secure_uploads site setting was enabled. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00634 · 49.7th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-07-09T21:59Z
EPSS history
Timeline
  • 09 JUL 21:59Z
    Discourse: Secure uploads exposed by hotlinked image copying
    cvelistv5