Medium severity6.5NVD Advisory· Published Jul 9, 2026· Updated Jul 14, 2026
CVE-2026-46413
CVE-2026-46413
Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, regular users could route direct S3 multipart uploads through ExternalUploadManager into the admin backup store. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Affected products
4<2026.6.0, <2026.5.1, <2026.4.2, <2026.1.5+ 2 more
- (no CPE)range: <2026.6.0, <2026.5.1, <2026.4.2, <2026.1.5
- cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*range: >=2026.1.0,<2026.1.5
- cpe:2.3:a:discourse:discourse:2026.6.0:*:*:*:latest:*:*:*
Patches
Vulnerability mechanics
References
9- github.com/discourse/discourse/commit/1f1ded8dd361d81786bff17b35e1138d6ee299c0nvdPatch
- github.com/discourse/discourse/commit/7ddde266617b452152c1bf5f903f6c07be38fc40nvdPatch
- github.com/discourse/discourse/commit/a53df26dcf7e50ce2b20bfd5454a0c9d44b8fc7dnvdPatch
- github.com/discourse/discourse/commit/abaa664c5df84026efb2ca264ba0f5586c3f2b01nvdPatch
- github.com/discourse/discourse/security/advisories/GHSA-3mvf-q9rg-w6m7nvdVendor AdvisoryMitigation
- github.com/discourse/discourse/releases/tag/v2026.1.5nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.4.2nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.5.1nvdRelease Notes
- github.com/discourse/discourse/releases/tag/v2026.6.0nvdRelease Notes
News mentions
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