CVE-2026-45775
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 products
- Discourse
- Discourse
- < 2026.1.0, 2026.1.4, 2026.3.1, 2026.4.1, 2026.5.0
- Fix
- Available
- CVSS 3.1
- 6.8 MEDIUM
- EPSS
- 0.3% (25th percentile)
- Weakness
- CWE-22
- NVD status
- Analyzed
- Published
- 2026-06-12
No indexed exploits for CVE-2026-45775 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-45775 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.