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CVE-2026-45788

Discourse: Secure uploads exposed by hotlinked image copying

Published: Jul 9, 2026Updated: Jul 14, 2026 Sources: CVE List NVDCWE-200
7.5HIGH
NVD MITRE
EPSS Score
0.5%
Top 62.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200

Affected Products

discourse
commercial·USaka discourse.org
discourse
Web & CMS Plugins

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5
github.com
https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471
github.com
https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95
github.com
and 6 more references View all →

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