CVE-2025-59337

EPSS 0.04%

Discourse: Cross-Site Data Exposure via Backup Restore Metacommand Injection in Multisite Deployments

Published: 10/5/2025Modified: 10/6/2025

Also known as:GHSA-7xjr-4f4g-9887BIT-discourse-2025-59337

Description

Discourse is an open-source community discussion platform. In versions 3.5.0 and below, malicious meta-commands could be embedded in a backup dump and executed during restore. In multisite setups, this allowed an admin of one site to access data or credentials from other sites. This issue is fixed in version 3.5.1.

Affected packages (1)

Bitnami/discoursefrom 0, < 3.5.1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 4.0	—	CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References (3)

WEBhttps://github.com/discourse/discourse/commit/43536b60d012cc8084e7e701d6afab9ba01e28a5
WEBhttps://github.com/discourse/discourse/security/advisories/GHSA-7xjr-4f4g-9887
WEBhttps://nvd.nist.gov/vuln/detail/CVE-2025-59337