5.5
MEDIUM CVSS 4.0
CVE-2025-59337
Discourse: Cross-Site Data Exposure via Backup Restore Metacommand Injection in Multisite Deployments
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.

INFO

Published Date :

Oct. 1, 2025, 9:16 p.m.

Last Modified :

Oct. 1, 2025, 9:16 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-59337 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 4.0 MEDIUM [email protected]
Solution
Update Discourse to version 3.5.1 to fix malicious meta-command execution during restore.
  • Update Discourse to version 3.5.1 or later.
  • Review and sanitize backup files before restoring.
  • Restrict access to the backup restore process.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-59337.

URL Resource
https://github.com/discourse/discourse/commit/43536b60d012cc8084e7e701d6afab9ba01e28a5
https://github.com/discourse/discourse/security/advisories/GHSA-7xjr-4f4g-9887
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-59337 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-59337 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-59337 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Oct. 01, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V4.0 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
    Added CWE CWE-77
    Added Reference https://github.com/discourse/discourse/commit/43536b60d012cc8084e7e701d6afab9ba01e28a5
    Added Reference https://github.com/discourse/discourse/security/advisories/GHSA-7xjr-4f4g-9887
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability