Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Discourse | Discourse | >= 2026.1.0, < 2026.1.5 |
Related Weaknesses (CWE)
References
- https://github.com/discourse/discourse/commit/5807c426880eadf248006e851604fc9284Patch
- https://github.com/discourse/discourse/commit/8b4a959b251a856a9c911fb9f2ac34fbc3Patch
- https://github.com/discourse/discourse/commit/eff53af26367ae0dcb3a426954d233e8c7Patch
- https://github.com/discourse/discourse/commit/fa74e0dec7341a858ab83a1977fa52629bPatch
- https://github.com/discourse/discourse/releases/tag/v2026.1.5Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.4.2Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.5.1Release Notes
- https://github.com/discourse/discourse/releases/tag/v2026.6.0Release Notes
- https://github.com/discourse/discourse/security/advisories/GHSA-3876-w96v-8v38Vendor Advisory
FAQ
What is CVE-2026-45788?
CVE-2026-45788 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2026-45788?
CVE-2026-45788 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45788?
Check the references section above for vendor advisories and patch information. Affected products include: Discourse Discourse.