CVE-2026-45775: Discourse: Cross-site backup access via path traversal in multisite local backups
Affected: discourse · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 25% of scored CVEs
DescriptionCVE.org
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, a path traversal vulnerability in Discourse backup handling could allow an authenticated administrator on one site in a multisite deployment to access backup files belonging to another site when backups are stored locally. In affected configurations, an admin on Site A could potentially retrieve sensitive backup data from Site B (same host, multisite) by crafting a backup download request with a traversal payload. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- discourse · discourse>= 2026.1.0-latest, < 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-45775 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.