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.

Metrics

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00465.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Discourse Subscribe
Discourse Subscribe

Configuration 1 [-]

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:*:*:*

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Discourse Subscribe
Discourse Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284327ce5 cve-icon cve-icon
https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc31a7471 cve-icon cve-icon
https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7449f95 cve-icon cve-icon
https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa cve-icon cve-icon
https://github.com/discourse/discourse/releases/tag/v2026.1.5 cve-icon cve-icon
https://github.com/discourse/discourse/releases/tag/v2026.4.2 cve-icon cve-icon
https://github.com/discourse/discourse/releases/tag/v2026.5.1 cve-icon cve-icon
https://github.com/discourse/discourse/releases/tag/v2026.6.0 cve-icon cve-icon
https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38 cve-icon cve-icon
History

Fri, 10 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 09 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Discourse
Discourse discourse
Vendors & Products Discourse
Discourse discourse

Thu, 09 Jul 2026 22:15:00 +0000

Type Values Removed Values Added
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.
Title Discourse: Secure uploads exposed by hotlinked image copying
Weaknesses CWE-200
References
Metrics cvssV4_0

{'score': 6.3, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-07-10T14:39:14.267Z

Reserved: 2026-05-13T08:19:32.602Z

Link: CVE-2026-45788

cve-icon Vulnrichment

Updated: 2026-07-10T14:39:09.610Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-09T22:17:04.933

Modified: 2026-07-14T20:41:53.070

Link: CVE-2026-45788

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-31T13:30:17Z

Weaknesses