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CVE-2026-45788Discourse: Secure uploads exposed by hotlinked image copying
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.
6.3 MEDIUMEPSS 0.63%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 6.3 | MEDIUM | 4.0GitHub_M (CNA) | 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 |
| 7.5 | HIGH | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Details
- CVE ID
- CVE-2026-45788
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Jul 9, 2026
- Last modified
- 2026-07-14 20:41 UTC
- Weaknesses
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
As published by the CNA in the CVE record.
discoursediscourse3 version ranges
- >= 2026.1.0-latest, < 2026.1.5
- >= 2026.4.0-latest, < 2026.4.2
- >= 2026.5.0-latest, < 2026.5.1
References
- github.com 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 https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bced1aa
- github.com https://github.com/discourse/discourse/releases/tag/v2026.1.5
- github.com https://github.com/discourse/discourse/releases/tag/v2026.4.2
- github.com https://github.com/discourse/discourse/releases/tag/v2026.5.1
- github.com https://github.com/discourse/discourse/releases/tag/v2026.6.0
- github.com https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38