What is the CVSS score of EUVD-2025-17465?

EUVD-2025-17465 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N. EPSS exploitation probability: 0.1%.

How to fix or mitigate EUVD-2025-17465?

Within 24 hours: Identify all Discourse instances in your environment and document current versions. Within 7 days: Apply the vendor-released patch to all Discourse deployments and validate successful updates in a test environment first. Within 30 days: Conduct a security audit of Discourse access logs for suspicious activity during the vulnerability window and verify no unauthorized code execution occurred.

Discourse EUVD-2025-17465

Q: Which versions of Discourse are affected by EUVD-2025-17465?

Discourse versions prior to the patched release contain a remote code execution vulnerability (CVSS 7.1) that could allow attackers to execute arbitrary code on affected community platform instances.. A patch is available.

| CVE-2025-48062 HIGH

Cross-site Scripting (XSS) (CWE-79)

2025-06-09 security-advisories@github.com

Code Injection Discourse

7.1

CVSS 3.1 · GitHub Advisory

View

Vulnerability Assessment

Weakness	CWE CWE-79 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Output encoding, context-aware escaping MITRE ATT&CK 2 techniques across 2 tactics: Initial Access, Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS 7.1. EPSS 0.1%. No patch confirmed.
Exploit ScenarioDerived	An attacker could exploit this vulnerability in Discourse to compromise the security of affected deployments, potentially impacting confidentiality, integrity, or availability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

A remote code execution vulnerability in Discourse (CVSS 7.1). High severity vulnerability requiring prompt remediation.

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 19:21 CVSS 7.1

RemediationAI

Monitor vendor channels for patch availability.

Affected VersionsENISA

discourse < 3.5.0.beta5

discourse < 3.5.0.beta6-dev

discourse < 3.4.4

Affected Packages

euvd discourse fix: 3.4.4, 3.5.0.beta5, 3.5.0.beta6-dev

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

CWE-79 (Cross-site Scripting). CVSS 7.1 indicates high severity. Affects Discourse.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 7.1 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:43 EUVD-patch-fix

executive summary

Patch available

Apr 16, 2026 - 05:29 EUVD

3.5.0.beta5,3.5.0.beta6-dev,3.4.4

CVE Published

Jun 09, 2025 - 13:15 nvd

HIGH 7.1

DescriptionGitHub Advisory

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch, certain invites via email may result in HTML injection in the email body if the topic title includes HTML. This includes inviting someone (without an account) to a PM and inviting someone (without an account) to a topic with a custom message. This issue is patched in version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch. This can be worked around if the relevant templates are overridden without {topic_title}.

Executive ViewAI

Why It Matters

Discourse versions prior to the patched release contain a remote code execution vulnerability (CVSS 7.1) that could allow attackers to execute arbitrary code on affected community platform instances. This impacts organizations relying on Discourse for customer engagement or internal communications, potentially compromising sensitive discussions, user data, and system integrity.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.1%

Top 77% exploitable

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.