CVE-2025-59337Network attack vector

Cross-site data access via restore metacommand injection

Published Oct 1, 2025 · Updated Oct 2, 2025

Command injection in Discourse 3.5.0 and earlier allows remote authenticated users to access other sites' data during backup restore. The database restorer filters a supplied dump and pipes it into psql without nonce-bound restrict and unrestrict delimiters, allowing embedded psql meta-commands to run. Exploitation requires a multisite deployment, site-admin access, a crafted backup dump, and a restore operation; exposed data includes credentials.

CVSS severity5.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Discourse 3.5.0 and earlier allows remote authenticated users to access other sites' data during backup restore. The database restorer filters a supplied dump and pipes it into psql without nonce-bound restrict and unrestrict delimiters, allowing embedded psql meta-commands to run. Exploitation requires a multisite deployment, site-admin access, a crafted backup dump, and a restore operation; exposed data includes credentials.

The record

CVE
CVE-2025-59337
Published
Oct 1, 2025
Updated
Oct 2, 2025
Vendor
Discourse
Product
Discourse
Classifications
CWE-77, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 2, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 3.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Discourse · Discourseversion=< 3.5.1

Published CVSS scores

6.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
5.5GitHub, Inc.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

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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