CVEvulnerability

CVE-2026-45775

6.8 MEDIUM Published 2026-06-12 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-06-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-22

Description

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 configurations

• discourse discourse (< 2026.1.0) • discourse discourse (>= 2026.1.0 < 2026.1.4) • discourse discourse (>= 2026.3.0 < 2026.3.1) • discourse discourse (>= 2026.4.0 < 2026.4.1) • discourse discourse 2026.5.0

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References