What is the CVSS score of CVE-2026-63683?

CVE-2026-63683 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.2%.

Advanced Module Manager Extension For Joomla CVE-2026-63683

EUVD-2026-47810 HIGH

Authentication Bypass by Spoofing (CWE-290)

2026-07-22 Joomla

Authentication Bypass Advanced Module Manager Extension For Joomla Conditional Content Extension For Joomla Content Templater Pro Extension For Joomla Rereplacer Extension Pro For Joomla Regularlabs Com

7.5

CVSS 3.1 · Vendor: Joomla

View

Vulnerability Assessment

Weakness

CWE

CWE-290

OWASP Top 10:2025

A07:2025 - Authentication Failures

ASVS 5.0

V6 - Authentication Anti-spoofing controls

MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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

No patch listed yet 0.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAIv1 – Jul 27, 2026

Authentication bypass in Regular Labs Joomla extensions (Advanced Module Manager, Conditional Content, Content Templater Pro, and ReReplacer Pro) allows remote attackers to circumvent IP and GeoIP-based access restrictions by spoofing forwarded headers, effectively granting unauthorized access to location-restricted content or modules. The vulnerability has a CVSS 7.5 (High) with no authentication or user interaction required, but EPSS predicts a very low likelihood of exploitation (0.19%), and no public exploit code or active exploitation has been identified at this time. Affected versions span multiple extensions, and organizations using GeoIP/IP rules should treat this as a moderate risk requiring prompt attention.

Affected VersionsENISA

Content Templater Pro extension for Joomla 1.0.0-13.0.0

Advanced Module Manager extension for Joomla 1.0.0-11.0.1

Conditional Content extension for Joomla 1.0.0-6.0.0

ReReplacer extension Pro for Joomla 1.0.0-15.0.3

Affected Packages

euvd advanced_module_manager_extension_for_joomla no fix

euvd conditional_content_extension_for_joomla no fix

euvd content_templater_pro_extension_for_joomla no fix

euvd rereplacer_extension_pro_for_joomla no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 4 packages in euvd

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

Know when Advanced Module Manager Extension For Joomla gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

Vendor (Joomla) PRIMARY 7.5 HIGH

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

Primary rating from Vendor (Joomla) · only source for this CVE.

CVSS VectorVendor: Joomla

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

CVSS changed

Jul 27, 2026 - 19:22 NVD

7.5 (HIGH)

CVE Published

Jul 22, 2026 - 20:42 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 22, 2026 - 20:42 cve.org

HIGH 7.5

DescriptionCVE.org

IP and GeoIP conditions trusted spoofable forwarded headers, allowing remote clients to bypass location-based rules.

Threat Intelligence Overview

EPSS Score

0.2%

Top 91% exploitable

Social Media

Sightings

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

Vulnrichment CIRCL

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 0.2%

Patch available No

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.