Medium 5.5Published Oct 1, 2025

CVE-2025-59337Discourse: Cross-Site Data Exposure via Backup Restore Metacommand Injection in Multisite Deployments

Updated under an hour ago (Oct 26, 2026, 5:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.5 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 2, 2025
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

discourse discourse discourse:discourse (from the name)	before 3.5.1	CNA record
discourse discourse discourse:discourse	before 3.5.1; before 3.6.0; 3.6.0	NVD

References

https://github.com/discourse/discourse/security/advisories/GHSA-7xjr-4f4g-9887x-refsource-confirm, vendor-advisory
https://github.com/discourse/discourse/commit/43536b60d012cc8084e7e701d6afab9ba01e28a5x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.