CVE-2025-59337

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

CVSS 5.5 MEDIUMEPSS 0.3%CWE-77

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

discourse · discourse

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References

https://github.com/discourse/discourse/commit/43536b60d012cc8084e7e701d6afab9ba01e28a5 https://github.com/discourse/discourse/security/advisories/GHSA-7xjr-4f4g-9887